represented by - longoschools.com laboratory fume hoods represented by: bmc p.o. box 4089 muskegon...

BMCLaboratory Fume Hoods

Represented By:

BMCP.O. Box 4089Muskegon MI 49444Telephone: (231) 733-1206FAX: (231) 733-2116e-mail: [email protected] page: www.bmclab.com

© BMC 2006

M E M B E R

SEFASCIENTIFIC

EQUIPMENT &

FURNITURE

ASSOCIATION

Cover 1/27/06, 11:12 AM1

Brian

Placed Image

Airfoil

ADA Fume Hoods.............................................................12

ADA Fume Hood Assemblies............................................13

Add Air Fume Hoods........................................................10

Add Air Fume Hood Assemblies........................................11

Bypass Fume Hoods........................................................... 6

Bypass Fume Hood Assemblies......................................... 7

Low Bench Fume Hoods....................................................18

Low Bench Fume Hood Assemblies.................................19

Perchloric Acid Fume Hoods............................................16

Perchloric Acid Fume Hood Assemblies...........................17

Radio Isotope Fume Hoods................................................14

Radio Isotope Fume Hood Assemblies..............................15

Variable Volume Fume Hoods........................................... 8

Variable Volume Fume Hood Assemblies........................... 9

Walk-In Fume Hoods.........................................................18

Walk-In Fume Hood Assemblies........................................19

Alarms...................................................................................28

Anemometer..............................................................................32

Baffle Options.........................................................................31

Base Cabinets.........................................................................26

Baths.......................................................................................30

Blowers..............................................................................33-34

Canopy Hoods.........................................................................26

Ceiling Enclosures..................................................................27

Countertops.............................................................................29

Definitions.............................................................................38

1

Demonstration Fume Hood....................................................22

Drains....................................................................................30

Electrical Fixtures...................................................................29

Filler Panels............................................................................26

Filters.....................................................................................32

Fire Extinguishers..................................................................31

Flow Patterns......................................................................... 3

Introduction........................................................................... 2

Lattice Assemblies.................................................................32

Local Exhaust.........................................................................33

Material Options.....................................................................31

Planning................................................................................. 4

Plumbing Rough-In................................................................35

Portable Fume Hood...............................................................23

Sash Options..........................................................................27

Service Fixtures.......................................................................28

Sinks......................................................................................30

Smoke....................................................................................32

Specifications..........................................................................36

Spray Booth.......................................................................24-25

Thin Wall Fume Hood............................................................20

Thin Wall Fume Hood Assemblies........................................21

Transitions..............................................................................33

Traps........................................................................................30

Vent Kits..................................................................................31

Wash Down............................................................................33

Y Branches.............................................................................33

Table of Contents BMC/Laboratory Fume HoodsBMC/Laboratory Fume Hoods

NOTES:

40

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Introduction

you with maximum safety at minimum cost.Incorporating standard options, such as combinationsashes and sash stops, allows you to maintain facevelocities while exhausting less air. Hence, the BMC FumeHood costs less to operate than other conventional units.

REFERENCES – The American Industrial HygieneAssociation, The American Conferences of GovernmentalIndustrial Hygienists and the American Society ofHeating, Refrigerating and Air-Conditioning Engineershave all published guidelines on Fume Hood facevelocities and operating procedures.

Because the performance of a Fume Hood is greatlyaffected by the surrounding conditions, the recommendationsin this catalog are based on normal or averageconditions. For recommendations on ideal or extremeconditions, the guidelines published by the abovereferenced agencies should be followed.

SPECIFICATIONS – BMC Fume Hoods are manufacturedin strict accordance with the specifications shown in thiscatalog. However, continuous testing and research mayresult in design and specification changes withoutadvance notice.

BMC/Laboratory Fume Hoods

2

GENERAL – The name BMC has long been synonymouswith quality and longevity. Our newly redesigned FumeHood is a proud example of this reputation. Over 50 yearsof experience, combined with state-of-the-artengineering and testing facilities, provide you with aFume Hood unsurpassed in quality and performance.

TESTING – Safety should be the number one concernwhen choosing a Fume Hood. That is why BMC testsand certifies each style Fume Hood in accordance withthe current ASHRAE method of testing performance oflaboratory Fume Hoods.

The ASHRAE 110 test procedure is an industrystandard, recognized by SEFA and the AmericanConference of Governmental Industrial Hygienists, forsafe Fume Hood performance.

Our test facility is available for you to witness theASHRAE test procedure or to test special designs. Tomake arrangements to visit our test facility, contact yourlocal BMC Representative or our Main Office inMuskegon, MI.

DESIGN – The design of the BMC Fume Hood provides


NOTES:

39

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Flow Patterns

Airfoil Bypass Hoods

The Airfoil Bypass Hoods have a double bypass to provideconstant exhaust volume and limit changes in face velocity.

The upper bypass functions automatically with the raising andlowering of the sash. The lower bypass provides a continuousair sweep of the work surface.

When hood top enclosures are used, a bypass grille must bespecified.

Airfoil Variable Air Volume Hoods

The Variable Air Volume (VAV) Hoods are designed to be usedwith exhaust control systems provided by other manufacturers.

In lieu of an upper bypass the VAV Hood has a lintel whichrestricts the air intake of the Hood to the sash opening and lowerbypass.

The commercially available exhaust control system will detectthe movement of the sash and adjust the volume of air requiredto maintain a constant face velocity.

Factory mounting of the exhaust controls is available whenspecified.

Airfoil Add Air Hoods

The Add Air Hoods provide up to 70% of the Hood exhaustrequirements. With a bypass similar to the Airfoil Bypass Hood,outside air is introduced through the add air plenum, thusminimizing the amount of conditioned room air required.

When outside temperatures are extreme, it may be necessary totemper the incoming air.


Sash Closed Sash Open


3


BMC/Laboratory Fume HoodsDefinitions

Exhaust Collar – Connection between exhaust duct andFume Hood through which all exhaust air passes.

Face Velocity – Speed of air moving into Fume Hoodentrance or access opening, expressed in feet per minute(FPM).

Liner - Interior lining used for side, back, top enclosurepanels, exhaust plenum and baffle system of a laboratoryFume Hood.

Lintel - Portion of laboratory Fume Hood front locateddirectly above the access opening.

Resin-Chem - White chemical resistant fiberglassreinforced thermoset resin sheet.

Sash - Movable transparent panel set in Fume Hoodentrance.

Service Fitting - Fixture laboratory plumbing mounted onthe Fume Hood intended to control the supply of piped gasesand liquids for laboratory use.

Static Pressure - Air pressure in laboratory Fume Hood orduct, usually expressed in inches of water.

Static Pressure Loss - Measurement of resistance createdwhen air moves through a duct or hood, usually expressedin inches of water.

Superstructure - That portion of a laboratory Fume Hoodthat is supported by the countertop.

Add Air - Supply air delivered to a laboratory Fume Hoodto reduce room air consumption..

Air Foil – Curved or angular members at the Fume Hoodentrance.

Air Volume – Quanity of air normally expressed in cubicfeet per minute (CFM).

ASHRAE - American Society of Heating, Refrigerating andAir Conditioning Engineers.

Baffle - Panel located across the Fume Hood interior backwhich controls the pattern of air moving into and throughthe Fume Hood.

Blower - Air moving device, sometimes called a fan,consisting of a motor, impeller and housing.

Bypass - Compensating opening that maintains a relativelyconstant volume exhaust through a Fume Hood regardlessof sash position and that functions to limit the maximumface velocity as the sash is lowered.

Canopy Hood - Suspended ventilating device for non-critical use to exhaust only heat, water vapor and odors.

Countertop - Work surface resting on a base cabinet.

Duct - Round, square or rectangular tube used to enclosemoving air.

Duct Velocity - Speed of air moving in a duct, usuallyexpressed in feet per minute (FPM).

38

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Figure 2 Poor Locations

The presence of cross-drafts will adversely affect theperformance or the Fume Hood. For this reason it is a good ideanot to locate the Fume Hood near open doors andwindows. High velocity air diffusers located directly in front ofthe Fume Hood could actually draw fumes out of the Hood andinto the room. Although there is no single preferred method fordelivery of make up air, it is a good idea to locate the Fume Hoodas far from the air diffuser as possible so that the air first sweepsthrough the laboratory working area and then into the Fume Hood.

Fume Hood Velocity SelectionSelection of the Fume Hood face velocity should be directly re-lated to the location of the Fume Hood. A Fume Hood in a goodlocation, as shown in Fig. 1, should operate properly at a facevelocity of 75 FPM. A poorly located Fume Hood, as shown inFig. 2, may require a face velocity of 125 FPM to maintain properperformance.

Since most fume hood installations require some type oflocation compromise, a face velocity of 100 FPM isusually the norm. Fume Hoods with a high heat source may re-quire slightly higher face velocities.

OSHA calls for, but does not require, a face velocity of 150 FPMfor Fume Hoods used with any of the 13 carcinogens listed inOSHA 1910.1003 et seq. (OSHA 1978). Studies have shown thathoods operated at face velocities of 150 FPM and greater oftenperform poorer than if operated at a lower face velocity, due todisruptive air turbulence at the perimeter of the Hood openingand in the wake of objects placed inside the work area of the Hood.

Fume Hood Blowers & DuctworkThe blower and ductwork control the amount of air moving throughthe Fume Hood. For this reason it is extremely important that theybe installed and maintained properly.

By using the chart on page 34, you can choose the correct blowerfor the Fume Hood you have selected.

Lineof

Traffic

Lineof

Traffic

Air ConditioningRegister

Hood

Center Table

Hood Base Cabinets

Base Cabinets

Sealed Windows

BMC/Laboratory Fume HoodsPlanning

Figure 1 Good Locations

Fume Hood SelectionThere are two main factors to consider when selecting a FumeHood style.

First consider the type of work being performed in the Hood. Theuse of perchloric acid or radioactive materials require a Fume Hoodspecifically designed for these materials. Large apparatus orcomplex set-ups may require the use of a low bench or walk-inFume Hood to accommodate the space requirements.

The second consideration in selecting a Fume Hood style is theair consumption of the hood. Operation of a Fume Hoodrequires a relatively large volume of room air.

If you determine that the amount of air being supplied to the roomis adequate to accommodate the exhaust volume of the Fume Hoodthe ByPass style Fume Hood would be an excellent choice.

If there is not enough supply air available, the Add Air style maybe the right choice.

The Variable Air Volume style Fume Hood is designed to be usedwith an adjustable damper system in the ductwork. The use of thisHood will, when used in conjunction with a VAV control system,drastically reduce the total amount of air consumed. This makesthe Variable Air Volume style Hood a good choice when trying toreduce air consumption for energy cost savings or when theresimply is not enough available supply air.

For more information see “Flow Patterns” on Page 3.

Fume Hood LocationsLocation of the Fume Hood is of prime importance, since a varietyof conditions will affect the performance of the Hood.

When selecting a location for the Fume Hood, operatorconvenience, work flow and exhaust duct locations should all beconsidered. In addition, an attempt should be made to keep thehood away from the line of traffic. It is both inconvenient anddangerous to install a Fume Hood so that the operator is forced towork in the line of traffic movement.

Lineof

Traffic

Lineof

TrafficAir ConditioningRegisters

HoodHood

CenterTable

CenterTable

Base Cabinets

Sealed Windows

4

BMC/Laboratory Fume HoodsSpecifications

Airfoil Bypass Fume HoodsConstructed as specified above. The Airfoil Bypass FumeHood superstructure has a white Resin-Chem interior lin-ing.

Airfoil Add Air Fume Hoods

The Add Air superstructure shall have an 18 gage, paintedsteel add air plenum. The plenum shall be capable of prop-erly distributing up to 70% of the air requirements of theHood. The add air plenum shall be of standard size and canbe added to any of the standard BMC Fume Hoods.

The interior lining of the Airfoil Add Air Fume Hood su-perstructure shall be white Resin-Chem.

Airfoil Radio Isotope Hoods

The interior lining and work surface of the Radio Isotopesuperstructure shall be type 304 stainless steel. Seams andjoints present in the interior and work surface shall bewelded to eliminate pockets, cracks and crevices that wouldpermit a buildup of radioactive materials.

The work surface shall be an integral welded part of thesuperstructure. It shall be watertight and furnished with araised edge to contain spills. It shall be properly reinforcedto support 200 lbs. per square foot up to a total weight of1,000 lbs. per Hood or base cabinet section.

An 18 gage type 304 stainless steel frame shall encase thelaminated safety glass sash. The vertical sliding sash shallride in type 304 stainless steel sash guides.

Interior removable access panels are provided for access tothe interior housing.

All other features of the Hood are as specified under "Con-struction."

Airfoil Perchloric Acid Fume Hoods

Perchloric Acid Fume Hood superstructures shall beidentified by a label indicating suitability for use withperchloric acid procedures. All exposed parts of thesuperstructure interior shall be seamless welded covedcornered, type 316, stainless steel.

The work surface shall an integral welded part of thesuperstructure. It shall be watertight and furnished with araised edge to contain spills. A full width drain through shallbe located below the baffle.

A water spray (wash down system) shall be provided forrinsing the area behind the baffle. Service fitting controlsfor the wash down system shall be external to the Hood,clearly identified and within easy reach.

An 18 gage, type 316 stainless steel frame shall encase thelaminated safety glass sash. The vertical sliding sash shallride in type 316, stainless steel sash guides.

Interior removable access panels are not provided onPerchloric Acid superstructures.

All other features of the Hood are as specified under"Construction."

Low Bench Hoods

Low Bench Fume Hood superstructures shall have a whiteResin-Chem interior lining. The sash shall consist of fourhorizontal sliding, laminated safety glass panels, with astainless steel edge trim. The panels shall ride on two tracksof extruded aluminum.

Two removable interior panels shall be located on each sideof the Fume Hood superstructure.

All other fixtures of the Low Bench Fume Hoodsuperstructure are specified under "Construction."

Walk-In Fume Hoods

Walk-In Fume Hood superstructures shall have awhite Resin-Chem interior lining. The sash shall consist oftwo vertical sliding, laminated safety glass panels as specifiedunder "Construction."

Two removable interior access panels shall be located oneach side of the Fume Hood superstructure.

All other features of the Walk-In Fume Hoodsuperstructure are as specified under "Construction."

37

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356

Interior LightingA maximum width, two tube fluorescent light fixture,complete with tubes, is provided with the Airfoil BypassFume Hood. The light fixture is mounted above a sealedsafety glass panel isolating it from corrosive fumes andhazardous vapors. Tube lights are easily replaced throughthe top front of the Fume Hood superstructure.

OptionsA variety of optional service fixtures are available fromBMC for installation in the Bypass Fume Hood. Our BMCrepresentatives work closely with customers in specifyingthe type of fixtures and electrical receptacles required.

B-608 96"


Fume Hood Superstructures are available in widths from 48" to 96", including BMC's unique 84" wide model as shown below. Serviceand electrical fixtures shown are optional and must be ordered separately.

Airfoil BypassFume Hoods

Continuous air flow across the work surface of the AirfoilBypass Fume Hood exhausts potentially hazardous vaporssafely away from the work environment, even with the sashclosed!

The Airfoil Bypass Fume Hood features an internalbypass opening located above the sash allowing for aconstant exhaust volume while maintaining the facevelocity. In operation, the bypass works automatically, inconjunction with the hood sash. The bypass adjustment ismade as the sash is opened and closed creating a relativelyconstant face velocity regardless of sash position.

Design

The Bypass Fume Hood comes equipped with a full viewsash providing an unobstructed view of the Hood interiorwork area. The sash, a glazed 7/32" thick laminated safetyglass is provided with a full width flush pull. Acounterweight provides for one finger operation of the sashat any position.

The entrance of the Hood is framed with inward-angledmembers. This angled frame works to minimize turbulenceand provide smooth movement of air into the Hood,resulting in a more efficient operation of the Fume Hood atface velocities ranging from 60 to 150 FPM. A lowerairfoil sash stop maintains a 1" space (below closed sash)that allows air to flow continuously across the worksurface inside the Hood.

Double wall construction of the Hood superstructure allowsfor easy installation of service fixtures and routing ofinterior plumbing and electrical lines. The interior of theAirfoil Bypass Fume Hood is white “Resin-Chem.”Removable access panels on both interior sides of the Hoodare standard features. The exterior superstructure sidepanels are also removable for easy access to servicefixtures and supply lines.

B-604 48" B-605 60" B-606 72" B-607 84"

The above illustration depicts the routing of service andelectrical lines in a typical Fume Hood. Unless specifiedothrewise, all service and electrical fixtures are shippedseparately for installation in the field. Piping, conduit andwire are not included and must be furnished by others inaccordance with local codes.

Light SwitchVac.

Vac.

Air

Air

Gas

GasC.W.Duplex Electrical Outlet

Flourescent Light

Rectangular Duct Collar

Removable Access Panel

CupsinkP-Trap

Waste Line

Supply LinesConduit

Shut-Off Valves

Junction Box

BMC/Laboratory Fume HoodsPlumbing Rough-inFluorescent LightThe exact routing of service lines will vary depending ont h e p o i n t o f o r i g i n a n d n u m b e r o f s e r v i c e s . T h e i l l u s t r a t i o n shown above shows the service lines feeding up throughthe Hood from the floor. Service lines can also be routedthrough the Fume Hood side wall from the ceiling.inside 1-111/26/06, 11:32 AM6

Airfoil BypassAssemblies

Airfoil Bypass Fume Hood AssembliesThe five standard Fume Hood sizes are each available as acomplete assembly.

Detailed information on base cabinets, countertops andservice fixtures is shown on pages 26, 28 and 29.

The assembly for the 48" and 60" wide Hoods consists of astandard base cabinet, two LF35-7 filler panels, dished

Rough-in Details

Duct collar locations are as shown above. The center line of each collar is 8" from theback of the hood. The area indicated by the dashed lines is designated for plumbing andelectrical rough-ins. All rough-ins should be kept within 7" of the wall and 18" from thefloor.

B-9040 48" B-9050 60"

54 1

/4"

31"

22"

48"

8"

7" 1"

30"

33 1/2"

66 5

/8"

35 3

/4"

2 3/

8"

90"

35"

89 1

/4"


The static pressures listed above are for the hoods only. An appropriate amount willhave to be added to this figure to compensate for the pressure drop through the ductsystem. The total pressure drop through the hood and the duct system must be known toselect the proper exhaust blower.

epoxy resin countertop, F-400 3" x 6" epoxy resin cupsink, sixF-100 service fixtures, F-110 cold water fixture, F-200 lightswitch, F-210 blower switch and two F-220 110V duplexes.

72", 84" and 96" assemblies include all of the above alongwith a second base cabinet, cupsink and water fixture.

All service and electrical fixtures are furnished, but notinstalled.

Airfoil VariableVolume Fume Hoods

Interior LightingA twin tube fluorescent light fixture provides illuminationof the Hood's interior surfaces. The fixture is recessed intothe interior Hood ceiling and protected behind a sealed safetyglass panel away from hazardous vapors and corrosivefumes. Tubes (included with Hood purchase) are easilyreplaced from the outside of the Hood superstructure.

OptionsA variety of optional service fixtures are available fromBMC for installation in the Variable Volume Fume Hood.Mounting holes for fixtures and electrical receptacles arepre-cut and capped when fixtures are not required.

Fume Hood Superstructures are available in widths from 48" to 96", including BMC's unique 84" wide model as shown below.Service and electrical fixtures shown are optional and must be ordered separately.

B-618 96"B-617 84"


The Variable Volume Fume Hood is specifically designedfor use with exhaust control systems provided by othermanufacturers that monitor and control the amount of airbeing exhausted from the Hood. The use of these deviceswill maintain a constant face velocity and greatly reducethe operating cost of the Fume Hood.

Design

A lintel at the upper front of the superstructure restricts theHood air intake to the front sash opening. By incorporatingany one of a number of commercially available VAVcontrols, the exhaust volume of the Hood can be varied tomaintain a specified face velocity regardless of sashposition.

The full view sash provides a clear, unobstructed view ofthe work surface and when fully opened, allows easyaccess to all areas of the Hood interior. The sash iscounterweighted for easy up/down operation and is madeof 7/32" laminated safety glass with a full width flush pull.

The lower airfoil acts as a sash stop designed to provide a1" gap (with sash closed) allowing air to continuously sweepthe countertop of the Fume Hood.

Double side wall Hood construction providesadequate space for mounting service fixtures. The interior“Resin-Chem” lining has removable access panels oneither side providing easy access for installation andmaintenance of service and electrical fixtures. Bothexterior side panels of the Hood superstructure are alsoremovable for access to lines.

B-614 48" B-615 60" B-616 72"

8

BMC/Laboratory Fume HoodsAccessories

Duct Transitions

Duct Transitions are designed to convert the rectangular collorof the BMC Fume Hood to a round collar.

Transitions are constructed of heavy gage coated steel and willwork with standard round ductwork.

F-500 6"x12" Collar to 9" Dia.F-501 6"x12" Collar to 10" Dia.F-502 6"x14" Collar to 9" Dia.F-503 6"x16" Collar to 10" Dia.F-504 6"x20" Collar to 12" Dia.

Y Branches

Transitions

Y-Branches

Duct Wash Down

F-508 Wash Down assemblies are suited for use withperchloric acid duct systems. Each nozzle is capable ofdelivering 3 gallons of water per minute at a water pressure of40 PSI. The Wash Down assembly is designed to be attachedto 12" dia. duct and has a 1/4" male pipe connection.

F-508B l o w e r s Blowers for both exhaust and supply are designed for efficient, quiet, continuous duty.Units have a forward curved impeller and come complete with a weatherproof drive cover.Spark resistant and corrosion resistant coatings are available upon request.

When using the chart on page 34, figure the equivalent of 15 linear feet of ductwork for

each 90 degree elbow. For complex exhaust systems, contact your BMC representative

for assistance in selecting a blower.Local Exhaust

F-509 F-509 The BMC Local Exhaust Hood is designed for use with

a t o m i c a b s o r p t i o n s p e c t r o p h o t o m e t e r s o r f l a m e

photometer equipment. Unit comes complete with a012" dia.

stainless steel cone, 8' of 6" dia. flexible duct and adjustable

support arm.

33Y Branches are used to connect two exhaust or supply ducts on

F u m e H o o d s t h a t r e q u i r e m o r e t h a n o n e e x h a u s t o r s u p p l y

c o l l a r . B r a n c h e s a r e c o n s t r u c t e d o f c o a t e d s t e e l a n d w i l l w o r k

w i t h s t a n d a r d r o u n d d u c t w o r k .

F - 5 0 6 ( 2 ) 9 " D i a . t o a S i n g l e 1 2 " D i a .


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Airfoil VariableVolume Assemblies

Airfoil Variable Volume AssembliesThe five standard Fume Hood sizes are each available as acomplete assembly.



Rough-in Details

B-9140 48" B-9150 60" B-9180 96"

54 1

/4"

31"

22"

48"

8"

7" 1"

30"

33 1/2"

66 5

/8"

35 3

/4"

2 3/

8"

90"

89 1

/4"

35"

33 7/8"





Fume Hood Superstructures are available in widths from 48" to 96", including BMC's unique 84" wide model as shown below. Service andelectrical fixtures shown are optional and must be ordered separately.

Interior LightingThe interior of the Add Air Fume Hood is brightly lit by amaximum width dual fluorescent tube light fixture. The fixtureis mounted behind a sealed safety glass panel to isolate thefixture from corrosive fumes and flammable vapors.Replacement of fluorescent tubes is accomplished from theexterior top front of the Fume Hood superstructure.

OptionsChoose from the variety of optional service fixtures availablefrom BMC. Service fixture and electrical outlet types andlocations are to be specified by the customer to fit eachparticular application. Mounting holes are provided in thesuperstructure for final on-site installation of optional equipment.

B-628 96"B M C / L a b o r a t o r y F u m e H o o d s A i r f o i l A d d A i rF u m e H o o d sT h e B M C A i r f o i l A d d A i r F u m e H o o d p r o v i d e s a d d e deconomy through the use of a front mount “add airp l e n u m ” t h a t c a n s u p p l y u p t o 7 0 p e r c e n t o f t h e t o t a l H o o dair volume requirement from an outside source.DesignThe superstructure entrance of the Add Air Fume Hood isframed with inward angled members that minimizeturbulence and provide smooth movement of air into theHood. This design allows for efficient operation of the FumeH o o d a t f a c e v e l o c i t i e s r a n g i n g f r o m 6 0 t o . 5 0 F P M .Additionally, the built-in bypass feature above the Hoodsash works to maintain a relatively constant face velocityat any sash position.

The front mounted add air plenum of the Airfoil Add AirFume Hood utilizes a series of diffusers and louvers toprovide a uniform flow of supply air to the face of the FumeHood. This uniform air flow allows for providing up to 70%o f t h e o v e r a l l a i r v o l u m e r e q u i r e m e n t s o f t h e H o o d t h r o u g ht h e a d d a i r p l e n u m .

As with other BMC Fume Hoods, the Add Air Hood comese q u i p p e d w i t h a f u l l v i e w l a m i n a t e d s a f e t y g l a s s s a s h w i t ha full width flush pull and counterweight for easyoperation. A lower airfoil acts as sash stop that provides a1 " s p a c e f o r a i r t o c o n t i n u o u s l y f l o w i n t o t h e H o o d a n da c r o s s t h e w o r k s u r f a c e .

Double wall construction of the superstructure providesadequate space on both sides of the Hood for installation ofservice fixtures and routing of plumbing and electrical lines.The lining of the interior work area of the Hood is whiteResin-Chem with removable interior access panels on bothsides. Removable exterior side panels provide easy accessto fixtures and their service lines.

B-624 48" B-625 60"10 B-626 72" B-627 84"B M C / L a b o r a t o r y F u m e H o o d s A c c e s s o r i e sa n d O p t i o nsV e n t K i t s

F-440 Vent Kits are used to vent acid or flammable storagec a b i n e t s t o t h e F u m e H o o d .

F-439Material OptionsThe design of the BMC Fume Hoods allows for easysubstitution of standard components with optionalmaterials.

Interior linings are available in minerit, PVC or stainlesssteel in lieu of our standard Resin-Chem.

Sash options include full framed, painted or stainless steelsash.

Sash tracks and lower airfoils are both available instainless steel.

Contact your BMC representative to assist you inspecifying these items.Baffle OptionsStandard Fume Hoods are equipped with an adjustable upperbaffle only. Other adjustable baffle options are availableas follows:

B-790 Lower Adjustable BaffleB-791 Single Point Remote Adjustable Baffle for 48", 60" and 72" HoodsB-792 Single Point Remote Adjustable Baffle for 84" and 96" HoodsF-440

31Fire ExtinguishersF-439 Automatic Fire Extinguisher units are available for in-stallation in Fume Hoods. Fire Extinguishers are activated by afusible link. The link melts at 165º F, opening the valve whichreleased a multipurpose ABC Dry Chemical. Cylinders are con-structed of stainless steel and come complete with mountingbracket. Fume Hoods 72" and wider4require the use of two FireExtinguishers for adequate projection.

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Airfoil Add AirAssemblies

Airfoil Add Air Hood AssembliesThe five standard Fume Hood sizes are each available as acomplete assembly.



Rough-in Details

The static pressures listed above are for the hoods only. An appropriate amount will haveto be added to this figure to compensate for the pressure drop through the duct system.The total pressure drop through the hood and the duct system must be known to select theproper exhaust blower. Supply figures are based on 70% add air.

35"

22 1/2"

23 1/2"

22 1/2" 25 1/2" 25 1/2"

29"

Duct collar locations are as shown above. The center line of each collar is 8" from the backof the hood. The center line of the supply duct is 35 5/8" from the back of the hood. Thearea indicated by the dashed lines is designated for plumbing and electrical rough-ins. Allrough-ins should be kept within 7" of the wall and 18" from the floor.

54 1

/4"

31"

22"

48"

8"

7" 1"

30"

35 1/4"

40 1/2"

66 5

/8"

35 3

/4"

2 3/

8"

90" 24"

B-624 B-625 B-626

36"

23 1/2" 23 1/2"

B-627 B-628

26 1/2"26 1/2"

30"

35"

89 1

/4"

35 5/8"

40 7/8"

B-9280 96"B-9240 48"

COLLARSIZE

6" x 12"6" x 12"6" x 16"6" x 16"6" x 20"6" x 20"

(2)6" x 12"(2)6" x 12"(2)6" x 12"(2)6" x 14"

75 FPM 100 FPM 125 FPM 150 FPM

CFM650455850595

1050735

1250875

14501015

S.P..22.17.21.17.21.17.21.15.25.17

CFM867607

1133793

1400980

1667116719331353

CFM1083758

1417992

175012252083145824171691

CFM1300910

17001190210014702500175029002030

S.P..39.30.38.29.37.31.37.29.45.31

S.P..61.48.59.47.58.46.58.46.71.49

S.P..87.69.85.69.84.68.83.71

1.02.71

EXHSUPEXHSUPEXHSUPEXHSUPEXHSUP

HOODSIZE

48"

60"

72"

84"

96"

11

B-9270 84"B-9260 72"B-9250 60"




BMC/Laboratory Fume HoodsBMC/Laboratory Fume Hoods

F-425

Baths

F-420

Sinks, Drainsand Baths

Sinks

Sinks are available in a variety of sizes and configurations forinstallation in Fume Hoods.

F-400 - Oval epoxy resin cupsink, 3"x6", 1 1/2" NPT outletconnection.

F-401 - Oval polypropyene panel mount cupsink, 3"x6", withretainer nut, 1 1/2" NPT outlet connection.

F-402 - Rectangular epoxy resin cupsink, 13 3/4" x 4 1/2"x 5 1/2" with stainless steel straining screen, 1 1/2" NPT outlet.

F-410 - Drop-in epoxy resin sink, 16" x 12" x 8" Dp.



Baths

Baths are available in steam, hot water or electric. Each bathis furnished with four sets of concentric rings which are spacedon 1" increments up to 6" diameter. Baths are constructed of 20gauge, type 304 stainless steel and come complete with aremote valve for mounting in the post of the Fume Hood. Size is18" x 18".

F-430 SteamF-431 Hot WaterF-432 Electric

Drains and Traps

F-420 - Epoxy resin sink outlet with retainer nut, 1 1/2" NPToutlet connection.

F-425 - Polypropylene p-trap with adjustable riser, 1 1/2" NPToutlet connection.

F-400

F-402

F-410F-411F-412

30

inside 1-11 1/26/06, 11:33 AM11

Interior LightingA fluorescent light fixture completed with tubes illuminatesthe interior of the ADA Fume Hood. The light fixture isisolated from the Hood interior by a sealed safety glasspanel. Relamping of the fixture is accomplished from thetop front of the superstructure.

OptionsIn addition to optional service and electrical fixtures for theADA Fume Hood, BMC also features an optional sash witha split viewing panel, secondary containment trough/airfoil, remote adjustable baffle, baffle screen, and air-flowmonitor. Any or all of these options can be incorporated tomeet specific needs or HOPEC requirements.

BMC/Laboratory Fume HoodsAirfoil ADAFume Hoods

BMC’s ADA Fume Hood is designed to meet the uniqueneeds of wheelchair operators. The ADA Fume Hooddelivers all the features and capabilities of our standardFume Hood line with special accommodations built in tomeet the specific requirements needed to provide a safe worksite for wheelchair operators.

Design

The Americans with Disabilities Act (ADA) prohibitsdiscrimination in hiring and promotion on the basis ofphysical disability. The BMC ADA Fume Hood is designedto provide a safe and comfortable work area for awheelchair bound person. The extended height of the sashalso makes the ADA Fume Hood a practical work stationfor a standing individual.

The ADA Fume Hood comes complete with a full framedcombination horizontal/vertical sliding sash. The sash isglazed with 7/32" laminated safety glass and is counter-weighted for one finger vertical operation. The fourhorizontal sliding panels glide on a dual track system foreasy access into the Hood.

Double wall construction of the Hood superstructure allowsfor easy installation of service fixtures and service lines.The entrance of the Hood is framed with inward angledmembers to provide for smooth movement of air into theHood. The interior lining is white “Resin-Chem” and has aremovable access panel on each interior side.

B-684 48" B-685 60" B-686 72" B-688 96"B-687 84"


12

BMC/Laboratory Fume HoodsElectrical Fixturesand Countertops

Electrical Services

Flush mount electrical service fixtures come complete with devicebox and stainless steel face plate.

Explosion proof fixtures meet Class 1, Group C & D requirements.Explosion proof outlets and switches must be mounted on the frontpanel of the base cabinet or the exterior side of the Fume Hood.

For factory setting of electrical fixtures, specify part number F-340in addition to the electrical fixture number.

For factory setting and wiring of electrical fixtures, specify partnumber F320 in addition to the electrical fixturenumber.

Factory wiring of explosion proof fixtures on application only.

F-200 - Single pole light switch, 115 volt, 15 amp.

F-210 - Manual motor starter switch with pilot light, 115 volt, 15amp. Heating element not included.

F-220 - Duplex receptacle, 115 volt, 15 amp.


F-225 - GFI duplex receptacle, 115 volt, 15 amp.

F-260 - Explosion proof light fixture, specify two fixtures on hoods84" and over.

F-262 - Explosion proof receptacle.

F-264 - Explosion proof switch.

Countertops

B-8040 48"B-8050 60"B-8060 72"B-8070 84"B-8080 96"

ALLEN-BRADLEY

RESET

F-200

F-264

F-210

F-225

F-260

F-262

F-220F-221

Fume Hood work surfaces are molded from amodified epoxy resin that has been especially compoundedand cured to provide optimum physical and chemicalresistance required for a heavy duty laboratory workingsurface. Countertops are 1" thick with a 3/8" deep dishingto contain spills and have a non-glaring black finish.

If sinks or cupsinks are required, specify location.Front

29

inside 12-20 1/26/06, 11:33 AM1

60 1

/4"

37"

22"

54"

8"

7" 1"

30"

33 1/2"

29 3

/4"

2 3/

8"

90"

Rough-in Details

89 1

/4"

33 7/8"

29"

Airfoil ADAAssemblies

The standard airfoil ADA Fume Hoods are each availableas a complete assembly.


Each assembly includes two standard base cabinets (oneon 48" assembly), knee space area, two LF35-7 filler


The static pressures listed above are for the hoods only. An appropriate amount willhave to be added to this figure to compensate for the pressure drop through the ductsystem. The total pressure drop through the hood and the duct system must be knownto select the proper exhaust blower.

The CFM and static pressures listed above are measures with 50% of the sash area open.

Duct collar locations are as shown above. The center line of each collar is 8" from the backof the hood. The area indicated by the dashed lines is designated for plumbing and electri-cal rough-ins. All rough-ins should be kept within 7" of the wall and 18" from the floor.

35"

22 1/2"

23 1/2"

22 1/2" 25 1/2" 25 1/2"

29"

23 1/2" 23 1/2" 26 1/2" 26 1/2"

B-684 B-685 B-686

B-687 B-688

panels, dished epoxy resin countertop, F-400 3" x 6" epoxyresin cupsink, three F-100 service fixtures, F-110 cold wa-ter fixtures, F-200 light switch, F-210 blower switch andtwo F-220 110V duplexes.


B-9840 48" B-9850 60" B-9860 72" B-9880 96"

HOODSIZE

48"

60"

72"

84"

96"

COLLARSIZE

6" x 12"

6" x 16"

6" x 20"

(2)6" x 12"

(2)6" x 12"


CFM

325

425

525

625

725

CFM

433

567

700

833

967

CFM

542

708

875

1042

1208

CFM

650

850

1050

1250

1450

S.P.

.05

.05

.05

.05

.06

S.P.

.10

.09

.09

.09

.11

S.P.

.15

.15

.15

.14

.18

S.P.

.22

.21

.21

.21

.25

B-9870 84"

13


F-100

F-278

Service Fixturesand Alarms

Remote Control Fume Hood Fixtures

Remote control valves have forged brass valve bodies forstrength and durability. Valves for gas, air, vacuum andspecial gases are of needle type design with a stainless steelfloating cone and stainless steel replaceable seat. Valves forsteam service have a flat Teflon valve disc and stainless steelreplaceable seat; valves for water service have a renewableunit including a stainless steel seat and volume control. Alloutlet assemblies are furnished with a polished chrome platedfinish. For acid and solvent resistant coatings add thefollowing suffix to part numbers.

Clear Epoxy 01White Epoxy 02Black Epoxy 03Sepia Bronze 04Metallic Aluminum 05

For factory setting of a service fixture, specify part number F-330 in addition to the service fixture number.

For factory setting and piping of service fixtures, specify partnumber F-300 in addition to the service fixturenumber.

F-100 - Remote service valve with angled hose cock outlet.For use with gas, air, vacuum, steam or other special gases.Specify type of service.

F-110 - Remote service valve with gooseneck, for use withwater; specify hot or cold water.

F-120 - Remote service valve with gooseneck and vacuumbreaker, for use with water; specify hot or cold water.

F-125 - Dual remote service valve with gooseneck, for use withhot and cold water.

F-130 - Dual remote service valve with gooseneck and vacuumbreaker, for use with hot and cold water.

TEST-RESET

B M C N a t i o n a l P r o d u c t s

Air Velocity Monitor & Alarm

F-278 Velocity Monitor measures the face velocity of the Fume Hood. The monitorincludes a visual safe indicator light, visual alarm indicator light, audible alarm anda test reset button which also manually silences the alarm. Field calibration requiresthe use of an optional air flow measuring device as shown on page 32.

F-110

F-120

F-125

F-130

28

24" 30" 36"

inside 12-20 1/26/06, 11:33 AM2

Interior LightingA two tube fluorescent light fixture illuminates the interior ofthe Perchloric Acid Fume Hood. The fixture is mounted behind asealed safety glass panel to isolate the fixture from corrosivefumes and flammable vapors. Replacement of fluorescent tubesis accomplished from the exterior top front of the Fume Hoodsuperstructure.

OptionsA variety of optional service fixtures are available from BMC.The location of the fixtures must be specified for accuratecutting of the mounting holes located in the Fume Hood lining.

Fume Hood Superstructures are available in widths from 48" to 96", including BMC's unique 84" wide model as shownbelow. Service and electrical fixtures shown are optional and must be ordered separately.

B-645 60"

BMC/Laboratory Fume HoodsAirfoil PerchloricAcid Fume Hoods

This Fume Hood is specifically designed for the use ofperchloric acid. A coved stainless steel liner with integralwork surface, an internal water wash down system andwater collection trough provide for detailed cleaning of theHood interior. In addition, the interior baffles are alsoremovable for cleaning to prevent the dangerous build-upof perchlorates.

Design

The Perchloric Acid Fume Hood has an internal bypasslocated above the sash. The bypass operates automatically,opening when the sash is closed and closing as the sash israised. The bypass provides for a relatively constant facevelocity at any sash position.

The sash frame and lower airfoil are constructed of type316 stainless steel. The sash is glazed with 7/32" thicklaminated safety glass and has full width pull andcounterweight for easy up/down operation. In the closedposition, the lower airfoil acts as a sash stop providing a 1"space for air to continuously sweep the work surfaces.

The interior liner, work surface and baffles are also con-structed of type 316 stainless steel. A wash down spray baris located behind the upper baffle for continuous cleaningbehind the baffles. A full width trough is located below thelower baffle to collect the wash down water from both theHood and ductwork.

Double wall constructin of the superstructure allows forinstallation of service fixtures and routing of interiorplumbing and electrical lines. Access for installation andmaintenance of service fixtures is obtained by removingthe exterior side panel.

B-648 96"B-647 84"B-646 72"B-644 48"

16

“A”

7"

7"

7"

7"

“C”

4 3/4"

7 3/4"

10 3/4"

19 3/4"

HOODSIZE

24"

30"

36"

48"

“B”

10 7/16"

8"

10 7/8"

10 7/8"

“D”

10 3/8"

14"

17 5/8"

26 5/8"

“E”

6"

6"

6 7/8"

6 7/8"

Exhaust Blowers

Exhaust Blowers feature a dynamically balanced forwardcurve wheel with cast iron hubs. Housing and motorbaseare 16 gage steel with a gray baked-on epoxy finish.

HOODSIZE

24"

30"

36"

48"

FILTERNUMBER

6556

6557

6558

6559

SIZE

16"X20"

22"X20"

14"X20"

20"X20"

Rough-in Details

QUANTITY

1

1

2

2

DIMENSIONS

Spray Booth BMC/Laboratory Fume Hoods

Motors are 115V/60HZ with H.P. as shown above.

Contact your BMC representative to assist you inspecifying an explosion proof exhaust blower.

CFM AT STATIC PRESSURE SHOWN

.125

560

920

968

1160

.375

470

820

890

1090

.625

360

710

810

963

.25

515

870

930

1125

.5

420

765

850

1035

.75

300

655

773

855

HOODSIZE

24"

30"

36"

48"

MODELNUMBER

7C037

7C038

7C039

7C647

OUTLETSIZE

4 1/4" x 7 3/8"

5 3/8" x 8 1/4"

6 1/2" x 10 3/4"

6 1/2" x 10 3/4"

HP

1/4

1/3

1/3

1/3

Replacement Filters

Spray Booth replacement filters are a 1" thickcotton polyester blended filter, laminated to a galvanizedsteel expanded metal support grid. Order by part numberfrom the chart to the left. (Note: 36" and 48" Spray Boothsrequire two filters.)

Plan View of Spray BoothTop Without Blower

5" x 10 7/8" See BlowerOutlet Size Above

Plan View of Spray BoothTop With Blower

B

AC

D

25

inside 12-20 1/26/06, 11:33 AM5

Airfoil Perchloric Acid AssembliesThe five standard Fume Hood sizes are each available as acomplete assembly.


The assembly for the 48" and 60" wide Hoods consists of astandard base cabinet, two LF35-7 filler panels, 3" x 6"

Rough-in Details

Airfoil PerchloricAcid Assemblies

The static pressures listed above are for the hoods only. An appropriate amountwill have to be added to this figure to compensate for the pressure drop throughthe duct system. The total pressure drop through the hood and the duct systemmust be known to select the proper exhaust blower.

Duct collar locations are as shown above. The center line of each collar is 8" fromthe back of the hood. The area indicated by the dashed lines is designated forplumbing and electrical rough-ins. All rough-ins should be kept within 7" of the walland 18" from the floor.

35"

22 1/2"

23 1/2"

22 1/2" 25 1/2" 25 1/2"

29"24" 30" 36"

B-644 B-645 B-646

23 1/2" 23 1/2" 26 1/2" 26 1/2"

B-647 B-648

COLLARSIZE

6" x 12"

6" x 16"

6" x 20"

(2)6" x 12"

(2)6" x 12"


CFM

650

850

1050

1250

1450

CFM

867

1133

1400

1667

1933

CFM

1083

1417

1750

2083

2417

CFM

1300

1700

2100

2500

2900

S.P.

.22

.21

.21

.21

.25

S.P.

.39

.38

.37

.37

.45

S.P.

.61

.59

.58

.58

.71

S.P.

.87

.85

.84

.83

1.02

HOODSIZE

48"

60"

72"

84"

96"

B-9440 48" B-9480 96"B-9470 84"B-9460 72"B-9450 60"

stainless steel cupsink, six F-100 service fixtures, F-110cold water fixture, F-200 light switch, F-210 blower switchand two F-220 110V duplexes.




33 7/8"

89 1

/4"

31"

35"

17

OptionsOptional service and electrical fixtures are available for use withthe BMC Spray Booth. Contact your BMC representative toassist you in specifying these items.

The BMC Spray Booth offers an economical way to exhaustodors and non-toxic fumes in Laboratory, Class Room andShop environments.

Design

The BMC Spray Booth is constructed of 18 gage steel thatis formed and welded into a rigid superstructure. Each unitis finished with a chemical resistant powder coat paint fin-ish and has a replaceable, pleated air filter.

The Spray Booth is designed to have a non-explosion proofexhaust blower (specified on the next page) mounteddirectly on top of the unit. A rectangular duct transition isincluded to connect the exhaust blower to the Spray Booth.For flammable fumes or vapors, an optional explosion proofexhaust blower must be specified. The explosion proofexhaust blower is designed to be mounted on the roof orother suitable location, but not on top of the Spray Booth.

Interior LightingThe interior of the Spray Booth is illuminated by a vaporproof incandescent light fixture (bulb included). Light bulbreplacement is accomplished from the interior of the booth.

When exhausting flammable fumes or vapors, an optionalexplosion proof light fixture must be specified.

BMC/Laboratory Fume HoodsSpray Booth

Spray Booth Superstructures are available in widths from 24" to 48" as shown below.

B-810 24" B-811 30" B-812 36" B-813 48"

24

inside 12-20 1/26/06, 11:33 AM6

Fume Hood Superstructures are available in widths of 72" and 96". Special sizes are also available; contact your BMCrepresentative for details. Service and electrical fixtures shown are optional and must be ordered separately.

B-668 96"

BMC/Laboratory Fume HoodsAirfoil Low Bench &Walk-In Fume Hoods

B-656 72" B-658 96"

B-666 72"

Large appratus or complex set-ups may require the use ofa Fume Hood specifically designed to meet theserequirements. The BMC Low Bench Fume Hood issupported by an 18" high table and has an interior heightof 63 3/4". The Walk-In Fume Hood has two vertical risingsash that allow you to roll in large equipment or portablework stations.

Design

The Low Bench Fume Hood has a four panel horizontalsliding sash. Each panel is a 7/32" thick laminated safetyglass and is trimmed on the edges with stainless steel “U”channel.

The Walk-In Fume Hood is equipped with twoindependently operating, full view, vertical rising sash. Eachsash is glazed with 7/32" laminated safety glass and iscounterweighted for one finger operation of any position.

Both Low Bench and Walk-In Hoods are framed withinward angled members to minimize turbulence andprovide smooth movement of air into the Hood. The lowerairfoil on the Low Bench Hood maintains a 1" space,below the horizontal sliding sash panels, which allows airto flow continuously across the work surface of the Hood.

Low Bench and Walk-In Hoods have a double wallconstruction that allows for easy installation of service fix-tures and routing of interior plumbing and electrical lines.The Hood interior is white “Resin-Chem” and has remov-able interior access panels on both sides.

Interior LightingA maximum width, two tube light fixture, complete withtubes, is provided with the Low Bench and Walk-In Hoods.The light fixture is mounted above a sealed safety glasspanel isolating it from corrosive fumes and hazardousvapors. The tube lights are easily replaced through the topfront of the Fume Hood superstructure.

OptionsA variety of service fixtures are available for installation inthe Low Bench and Walk-In Fume Hoods. Mounting holesfor fixtures and electrical receptacles are provided in thesuperstructures for final on-site installation of optionalequipment.

18

PortableFume Hood

Rough-in Details

23

COLLARSIZE

1 1/2" DIA.

S.P.

FREEAIR

S.P.

.1

S.P.

.2

S.P.

.3

CFM

100

CFM

98

CFM

95

CFM

90

MODELNUMBER

B-1735-PH

S.P.

.4

CFM

85

S.P.

.5

CFM

80

B-1735-PH - HoodB-1735-PT - CountertopB-1735-PS - Mobile Stand

The amount of air being exhausted through the hood will vary depending on thelength and shape of the ductwork. The chart below shows the exhaust volume (CFM)at various static pressures. For installations requiring long runs of ductwork, a supple-mental exhaust system may be required.

Exhaust fan is 115 V, 60 CY, 2870 RPM



The BMC Portable Fume Hood features safety andconvenience. Mobile design allows the Portable Fume Hoodto be wheeled into a working position and moved back to astorage location when the task is complete. Clear view sideand back panels make the Portable Fume Hood ideallysuited for demonstrations. It also allows instructorobservation when being used as a student work station.

Design

The framework of the Portable Fume Hood is fully welded,painted square tubing. The upper metal housing contains asingle tube fluorescent light (bulb included), exhaust fan,light and fan switches, duplex outlet and a double sided gashose connector. The interior work surface is black epoxyresin and is enclosed with 1/4" plexiglass viewing panels.The front viewing panel is hinged for easy access.Additional features include locking swivel casters, six footlong power cord and six feet of 1 1/2" diameter flexibleexhaust duct.

inside 12-20 1/26/06, 11:33 AM7

Low Bench & Walk-In AssembliesStandard Fume Hood sizes are each available as acomplete assembly.

Detailed information on countertops and service fixtures isshown on pages 28 and 29.

The assembly for the Low Bench Hoods consist of an 18"high table, a dished epoxy resin countertop, two F-400 3"x6"epoxy resin cupsinks, six F-100 service fixtures, two F-110

Rough-in Details

Duct collar locations are as shown above. Thecenter line of each collar is 8" from the back ofthe hood.

35"

25 1/2" 25 1/2"

35"

25 1/2" 25 1/2"

36"

26 1/2" 26 1/2"

36"

26 1/2" 26 1/2"

B-656

B-658

B-666

B-668

Airfoil Low Bench &Walk-In Assemblies BMC/Laboratory Fume Hoods

cold water fixtures, F-200 light switch, F-210 blower switchand two F-220 duplexes.

Walk-In assemblies consist of two F-401 side mountcupsinks, six F-100 service fixtures, two F-110 cold waterfixtures, F-200 light switch, F-210 blower switch and twoF-220 110V duplexes.


B-9560 72"

B-9580 96" B-9660 72" B-9680 96"

HOODS I Z E

72" LB96" LB72" WI96" WI

C O L L A RS I Z E

6" x 20"(2)6" x 12"

6" x 20"(2)6" x 12"


CFM831

11471181

1 6 3 1

C F M1157

1 5 2 91 5 7 52 1 7 5

C F M1 3 8 41 9 1 21 9 6 92 7 1 9

C F M1 6 6 12 2 9 42 3 6 33 2 6 3

S.P.813.16.26.32

S.P.823.28.47.57

S.P.836.44.74.89

S.P..52.64

1.061.29

7

2

"

50 5/8"

22"

6

3

4

3

/

4

"

8"

7"1"30"

3381/2"

1

8

"

243/8"

9

0

"

195

3/4"

71"

24"

84 7

/8"

8"

35"

35"

90"

35 3/8"68"


The CFM and static pressures listed above are measured with 50% of the sash area open.33 7/8"35 3/8"19

BMC/Laboratory Fume HoodsCOLLARSIZE

6" x 16"

6" x 16"


CFM569

744

CFM758

992

CFM

948

1240 CFM

1137

1488

S.P.

.20

.34

S.P.

.36

.61

S.P.

.56

.96

S.P.

.80

1.38

The static pressures listed above are for pressure drop through the hoods only. An appro-priate amount will have to be added to this figure to compensate for the pressure dropthrough the duct system. The total pressure drop through the hood and the duct systemmust be known to select the proper exhaust blower.

The CFM and static pressures listed above are measured with one sash open.

SIZE

48"

60"

DemonstrationFume Hoods

The BMC Demonstration Fume Hoods feature dual accesssashes and offer a clear, unobstructed view of the Hoodinterior.Design

Two independently operating sashes provide viewing andaccess from either side of the Demonstration Fume Hood.A fixed end window is also provided to increase theinterior viewing.

Sashes are glazed with laminated safety glass and have afull width PVC pull for maximum chemical resistance. TheHood interior is lined with chemical resistant “Resin-Chem”and is illuminated with a vapor proof incandescent lightfixture.Options

Two 3-way switches, a blower switch and two duplexoutlets are available for installation on the DemonstrationHood. These items are optional and must be orderedseparately.

Rough-in DetailsMODELNUMBER

B-814

B-816

48"or

60"

22

inside 12-201/26/06, 11:33 AM8


Interior LightingThe interior of the Thin Wall Fume Hood is brightly lit by avapor proof incandescent light fixture, bulb included.A single light fixture is provided in 48", 60" and 72"models and two fixtures are provided in the other models.Replacement of the incandescent bulbs is accomplishedfrom the interior of the Hood.

OptionsSwitches, outlets, and remote valves must be located on thefront panel of the Fume Hood base cabinet. Refer to pages28 and 29 for details.

Thin WallAssemblies

Thin Wall Fume Hood AssembliesThe five standard Fume Hood sizes are each available as acomplete assembly.

Detailed information on base cabinets and service fixturesis shown on pages 26, 28 and 29.

Assemblies for 48" and 60" wide Fume Hoods

Rough-in Details

B-9750 60" B-9760 72" B-9770 84"

Thin WallFume Hoods

The BMC Thin Wall Fume Hood provides an excellent lowcost means of exhausting high heat loads and non-hazardous fumes.

The Thin Wall design allows for maximum interior workarea and is well suited for installation on any counter of30" depth.

Design

The exterior of the Thin Wall Fume Hood is 18 gage steelwith an epoxy powder coat finish, front posts are stainlesssteel with a #4 finish. These components are attached to aheavy gage internal framework. This framework is weldedand bolted together to provide a ridged durable structurefor the Thin Wall Hood.

The interior of the Hood is lined with Minerit, a chemicalresistant gray composition stone material. The liner isattached to the internal framework with the use ofnon-metallic fasteners. A lintel, of the same material,restricts the air intake of the Hood to the sash opening. Thisrestriction allows you to vary the face velocity of the ThinWall Fume Hood by changing the sash position. Aninterior baffle system, also constructed of minerit,maintains a uniform face velocity across the entire openingof the sash. The upper portion of the baffle is adjustable tocompensate for high heat loads or light fumes.

The full view sash of the Thin Wall Hood is framed with achemical resistant black PVC. It is glazed with 7/32" thicklaminated safety glass and has a single counterweight foreasy up/down operations.

HOODSIZE

48"

60"

72"

84"

96"

COLLARSIZE

9" DIA.

10" DIA.

10" DIA.

(2) 9" DIA.

(2) 9" DIA.


CFM

710

904

1098

1292

1485

CFM

947

1206

1464

1722

1981

CFM

1184

1507

1830

2153

2476

CFM

1421

1808

2196

2583

2971

S.P.

.29

.30

.41

.25

.31

S.P.

.51

.54

.72

.45

.55

S.P.

.80

.84

1.13

.70

.86

S.P.

1.16

1.21

1.63

1.01

1.24

The static pressures listed above are for pressure drop through the hoods only. Anappropriate amount will have to be added to this figure to compensate for the pres-sure drop through the duct system. The total pressure drop through the hood and theduct system must be known to select the proper exhaust blower.

consist of a standard base cabinet, two LF35-7 fillerpanels, a 1" thick black epoxy resin countertop, F-200 lightswitch, F-210 blower switch and two F-220 110V duplexes.

72", 84" and 96" assemblies include all of the above alongwith a second base cabinet. Electrical fixtures are furnishedbut not installed.

B-838 96"


B-834 48" B-835 60" B-836 72" B-837 84"

B-9740 48" B-9780 96"

Duct collar locations are as shown above. The center line of each collar is 8" from theback of the hood. The area indicated by the dashed lines is designated for plumbingand electrical rough-ins. All rough-ins should be kept within 7" of the wall and 18"from the floor.

B-834 B-835 B-836

B-837 B-838

24" 30" 36"

21 1/2" 21 1/2" 24 1/2" 24 1/2"


20 21

inside 12-20 1/26/06, 11:33 AM9

Low Bench & Walk-In AssembliesStandard Fume Hood sizes are each available as acomplete assembly.

Detailed information on countertops and service fixtures isshown on pages 28 and 29.

The assembly for the Low Bench Hoods consist of an 18"high table, a dished epoxy resin countertop, two F-400 3"x6"epoxy resin cupsinks, six F-100 service fixtures, two F-110

Rough-in Details

Duct collar locations are as shown above. Thecenter line of each collar is 8" from the back ofthe hood.

35"

25 1/2" 25 1/2"

35"

25 1/2" 25 1/2"

36"

26 1/2" 26 1/2"

36"

26 1/2" 26 1/2"

B-656

B-658

B-666

B-668

Airfoil Low Bench &Walk-In Assemblies BMC/Laboratory Fume Hoods

cold water fixtures, F-200 light switch, F-210 blower switchand two F-220 duplexes.

Walk-In assemblies consist of two F-401 side mountcupsinks, six F-100 service fixtures, two F-110 cold waterfixtures, F-200 light switch, F-210 blower switch and twoF-220 110V duplexes.


B-9560 72"

B-9580 96" B-9660 72" B-9680 96"

HOODS I Z E

72" LB96" LB72" WI96" WI

C O L L A RS I Z E

6" x 20"(2)6" x 12"

6" x 20"(2)6" x 12"


CFM831

11471181

1 6 3 1

C F M1157

1 5 2 91 5 7 52 1 7 5

C F M1 3 8 41 9 1 21 9 6 92 7 1 9

C F M1 6 6 12 2 9 42 3 6 33 2 6 3

S.P.813.16.26.32

S.P.823.28.47.57

S.P.836.44.74.89

S.P..52.64

1.061.29

7

2

"

50 5/8"

22"

6

3

4

3

/

4

"

8"

7"1"30"

3381/2"

1

8

"

243/8"

9

0

"

195

3/4"

71"

24"

84 7

/8"

8"

35"

35"

90"

35 3/8"68"


The CFM and static pressures listed above are measured with 50% of the sash area open.33 7/8"35 3/8"19

BMC/Laboratory Fume HoodsCOLLARSIZE

6" x 16"

6" x 16"


CFM569

744

CFM758

992

CFM

948

1240 CFM

1137

1488

S.P.

.20

.34

S.P.

.36

.61

S.P.

.56

.96

S.P.

.80

1.38

The static pressures listed above are for pressure drop through the hoods only. An appro-priate amount will have to be added to this figure to compensate for the pressure dropthrough the duct system. The total pressure drop through the hood and the duct systemmust be known to select the proper exhaust blower.

The CFM and static pressures listed above are measured with one sash open.

SIZE

48"

60"

DemonstrationFume Hoods

The BMC Demonstration Fume Hoods feature dual accesssashes and offer a clear, unobstructed view of the Hoodinterior.Design

Two independently operating sashes provide viewing andaccess from either side of the Demonstration Fume Hood.A fixed end window is also provided to increase theinterior viewing.

Sashes are glazed with laminated safety glass and have afull width PVC pull for maximum chemical resistance. TheHood interior is lined with chemical resistant “Resin-Chem”and is illuminated with a vapor proof incandescent lightfixture.Options

Two 3-way switches, a blower switch and two duplexoutlets are available for installation on the DemonstrationHood. These items are optional and must be orderedseparately.

Rough-in DetailsMODELNUMBER

B-814

B-816

48"or

60"

22

inside 12-201/26/06, 11:33 AM8

Fume Hood Superstructures are available in widths of 72" and 96". Special sizes are also available; contact your BMCrepresentative for details. Service and electrical fixtures shown are optional and must be ordered separately.

B-668 96"

BMC/Laboratory Fume HoodsAirfoil Low Bench &Walk-In Fume Hoods

B-656 72" B-658 96"

B-666 72"

Large appratus or complex set-ups may require the use ofa Fume Hood specifically designed to meet theserequirements. The BMC Low Bench Fume Hood issupported by an 18" high table and has an interior heightof 63 3/4". The Walk-In Fume Hood has two vertical risingsash that allow you to roll in large equipment or portablework stations.

Design

The Low Bench Fume Hood has a four panel horizontalsliding sash. Each panel is a 7/32" thick laminated safetyglass and is trimmed on the edges with stainless steel “U”channel.

The Walk-In Fume Hood is equipped with twoindependently operating, full view, vertical rising sash. Eachsash is glazed with 7/32" laminated safety glass and iscounterweighted for one finger operation of any position.

Both Low Bench and Walk-In Hoods are framed withinward angled members to minimize turbulence andprovide smooth movement of air into the Hood. The lowerairfoil on the Low Bench Hood maintains a 1" space,below the horizontal sliding sash panels, which allows airto flow continuously across the work surface of the Hood.

Low Bench and Walk-In Hoods have a double wallconstruction that allows for easy installation of service fix-tures and routing of interior plumbing and electrical lines.The Hood interior is white “Resin-Chem” and has remov-able interior access panels on both sides.

Interior LightingA maximum width, two tube light fixture, complete withtubes, is provided with the Low Bench and Walk-In Hoods.The light fixture is mounted above a sealed safety glasspanel isolating it from corrosive fumes and hazardousvapors. The tube lights are easily replaced through the topfront of the Fume Hood superstructure.

OptionsA variety of service fixtures are available for installation inthe Low Bench and Walk-In Fume Hoods. Mounting holesfor fixtures and electrical receptacles are provided in thesuperstructures for final on-site installation of optionalequipment.

18

PortableFume Hood

Rough-in Details

23

COLLARSIZE

1 1/2" DIA.

S.P.

FREEAIR

S.P.

.1

S.P.

.2

S.P.

.3

CFM

100

CFM

98

CFM

95

CFM

90

MODELNUMBER

B-1735-PH

S.P.

.4

CFM

85

S.P.

.5

CFM

80

B-1735-PH - HoodB-1735-PT - CountertopB-1735-PS - Mobile Stand

The amount of air being exhausted through the hood will vary depending on thelength and shape of the ductwork. The chart below shows the exhaust volume (CFM)at various static pressures. For installations requiring long runs of ductwork, a supple-mental exhaust system may be required.

Exhaust fan is 115 V, 60 CY, 2870 RPM



The BMC Portable Fume Hood features safety andconvenience. Mobile design allows the Portable Fume Hoodto be wheeled into a working position and moved back to astorage location when the task is complete. Clear view sideand back panels make the Portable Fume Hood ideallysuited for demonstrations. It also allows instructorobservation when being used as a student work station.

Design

The framework of the Portable Fume Hood is fully welded,painted square tubing. The upper metal housing contains asingle tube fluorescent light (bulb included), exhaust fan,light and fan switches, duplex outlet and a double sided gashose connector. The interior work surface is black epoxyresin and is enclosed with 1/4" plexiglass viewing panels.The front viewing panel is hinged for easy access.Additional features include locking swivel casters, six footlong power cord and six feet of 1 1/2" diameter flexibleexhaust duct.

inside 12-20 1/26/06, 11:33 AM7

Airfoil Perchloric Acid AssembliesThe five standard Fume Hood sizes are each available as acomplete assembly.


The assembly for the 48" and 60" wide Hoods consists of astandard base cabinet, two LF35-7 filler panels, 3" x 6"

Rough-in Details

Airfoil PerchloricAcid Assemblies

The static pressures listed above are for the hoods only. An appropriate amountwill have to be added to this figure to compensate for the pressure drop throughthe duct system. The total pressure drop through the hood and the duct systemmust be known to select the proper exhaust blower.

Duct collar locations are as shown above. The center line of each collar is 8" fromthe back of the hood. The area indicated by the dashed lines is designated forplumbing and electrical rough-ins. All rough-ins should be kept within 7" of the walland 18" from the floor.

35"

22 1/2"

23 1/2"

22 1/2" 25 1/2" 25 1/2"

29"24" 30" 36"

B-644 B-645 B-646

23 1/2" 23 1/2" 26 1/2" 26 1/2"

B-647 B-648

COLLARSIZE

6" x 12"

6" x 16"

6" x 20"

(2)6" x 12"

(2)6" x 12"


CFM

650

850

1050

1250

1450

CFM

867

1133

1400

1667

1933

CFM

1083

1417

1750

2083

2417

CFM

1300

1700

2100

2500

2900

S.P.

.22

.21

.21

.21

.25

S.P.

.39

.38

.37

.37

.45

S.P.

.61

.59

.58

.58

.71

S.P.

.87

.85

.84

.83

1.02

HOODSIZE

48"

60"

72"

84"

96"

B-9440 48" B-9480 96"B-9470 84"B-9460 72"B-9450 60"

stainless steel cupsink, six F-100 service fixtures, F-110cold water fixture, F-200 light switch, F-210 blower switchand two F-220 110V duplexes.




33 7/8"

89 1

/4"

31"

35"

17

OptionsOptional service and electrical fixtures are available for use withthe BMC Spray Booth. Contact your BMC representative toassist you in specifying these items.

The BMC Spray Booth offers an economical way to exhaustodors and non-toxic fumes in Laboratory, Class Room andShop environments.

Design

The BMC Spray Booth is constructed of 18 gage steel thatis formed and welded into a rigid superstructure. Each unitis finished with a chemical resistant powder coat paint fin-ish and has a replaceable, pleated air filter.

The Spray Booth is designed to have a non-explosion proofexhaust blower (specified on the next page) mounteddirectly on top of the unit. A rectangular duct transition isincluded to connect the exhaust blower to the Spray Booth.For flammable fumes or vapors, an optional explosion proofexhaust blower must be specified. The explosion proofexhaust blower is designed to be mounted on the roof orother suitable location, but not on top of the Spray Booth.

Interior LightingThe interior of the Spray Booth is illuminated by a vaporproof incandescent light fixture (bulb included). Light bulbreplacement is accomplished from the interior of the booth.

When exhausting flammable fumes or vapors, an optionalexplosion proof light fixture must be specified.

BMC/Laboratory Fume HoodsSpray Booth

Spray Booth Superstructures are available in widths from 24" to 48" as shown below.

B-810 24" B-811 30" B-812 36" B-813 48"

24

inside 12-20 1/26/06, 11:33 AM6

Interior LightingA two tube fluorescent light fixture illuminates the interior ofthe Perchloric Acid Fume Hood. The fixture is mounted behind asealed safety glass panel to isolate the fixture from corrosivefumes and flammable vapors. Replacement of fluorescent tubesis accomplished from the exterior top front of the Fume Hoodsuperstructure.

OptionsA variety of optional service fixtures are available from BMC.The location of the fixtures must be specified for accuratecutting of the mounting holes located in the Fume Hood lining.


B-645 60"

BMC/Laboratory Fume HoodsAirfoil PerchloricAcid Fume Hoods

This Fume Hood is specifically designed for the use ofperchloric acid. A coved stainless steel liner with integralwork surface, an internal water wash down system andwater collection trough provide for detailed cleaning of theHood interior. In addition, the interior baffles are alsoremovable for cleaning to prevent the dangerous build-upof perchlorates.

Design

The Perchloric Acid Fume Hood has an internal bypasslocated above the sash. The bypass operates automatically,opening when the sash is closed and closing as the sash israised. The bypass provides for a relatively constant facevelocity at any sash position.

The sash frame and lower airfoil are constructed of type316 stainless steel. The sash is glazed with 7/32" thicklaminated safety glass and has full width pull andcounterweight for easy up/down operation. In the closedposition, the lower airfoil acts as a sash stop providing a 1"space for air to continuously sweep the work surfaces.

The interior liner, work surface and baffles are also con-structed of type 316 stainless steel. A wash down spray baris located behind the upper baffle for continuous cleaningbehind the baffles. A full width trough is located below thelower baffle to collect the wash down water from both theHood and ductwork.

Double wall constructin of the superstructure allows forinstallation of service fixtures and routing of interiorplumbing and electrical lines. Access for installation andmaintenance of service fixtures is obtained by removingthe exterior side panel.

B-648 96"B-647 84"B-646 72"B-644 48"

16

“A”

7"

7"

7"

7"

“C”

4 3/4"

7 3/4"

10 3/4"

19 3/4"

HOODSIZE

24"

30"

36"

48"

“B”

10 7/16"

8"

10 7/8"

10 7/8"

“D”

10 3/8"

14"

17 5/8"

26 5/8"

“E”

6"

6"

6 7/8"

6 7/8"

Exhaust Blowers

Exhaust Blowers feature a dynamically balanced forwardcurve wheel with cast iron hubs. Housing and motorbaseare 16 gage steel with a gray baked-on epoxy finish.

HOODSIZE

24"

30"

36"

48"

FILTERNUMBER

6556

6557

6558

6559

SIZE

16"X20"

22"X20"

14"X20"

20"X20"

Rough-in Details

QUANTITY

1

1

2

2

DIMENSIONS

Spray Booth BMC/Laboratory Fume Hoods

Motors are 115V/60HZ with H.P. as shown above.

Contact your BMC representative to assist you inspecifying an explosion proof exhaust blower.


.125

560

920

968

1160

.375

470

820

890

1090

.625

360

710

810

963

.25

515

870

930

1125

.5

420

765

850

1035

.75

300

655

773

855

HOODSIZE

24"

30"

36"

48"

MODELNUMBER

7C037

7C038

7C039

7C647

OUTLETSIZE

4 1/4" x 7 3/8"

5 3/8" x 8 1/4"

6 1/2" x 10 3/4"

6 1/2" x 10 3/4"

HP

1/4

1/3

1/3

1/3

Replacement Filters

Spray Booth replacement filters are a 1" thickcotton polyester blended filter, laminated to a galvanizedsteel expanded metal support grid. Order by part numberfrom the chart to the left. (Note: 36" and 48" Spray Boothsrequire two filters.)

Plan View of Spray BoothTop Without Blower

5" x 10 7/8" See BlowerOutlet Size Above

Plan View of Spray BoothTop With Blower

B

AC

D

25

inside 12-20 1/26/06, 11:33 AM5

60 1

/4"

37"

22"54

"

8"

7" 1"

30"

33 1/2"

29 3

/4"

2 3/

8"

90"

Rough-in Details

89 1

/4"

33 7/8"

29"

Airfoil ADAAssemblies

The standard airfoil ADA Fume Hoods are each availableas a complete assembly.


Each assembly includes two standard base cabinets (oneon 48" assembly), knee space area, two LF35-7 filler



The CFM and static pressures listed above are measures with 50% of the sash area open.

Duct collar locations are as shown above. The center line of each collar is 8" from the backof the hood. The area indicated by the dashed lines is designated for plumbing and electri-cal rough-ins. All rough-ins should be kept within 7" of the wall and 18" from the floor.

35"

22 1/2"

23 1/2"

22 1/2" 25 1/2" 25 1/2"

29"

23 1/2" 23 1/2" 26 1/2" 26 1/2"

B-684 B-685 B-686

B-687 B-688

panels, dished epoxy resin countertop, F-400 3" x 6" epoxyresin cupsink, three F-100 service fixtures, F-110 cold wa-ter fixtures, F-200 light switch, F-210 blower switch andtwo F-220 110V duplexes.


B-9840 48" B-9850 60" B-9860 72" B-9880 96"

HOODSIZE

48"

60"

72"

84"

96"

COLLARSIZE

6" x 12"

6" x 16"

6" x 20"

(2)6" x 12"

(2)6" x 12"


CFM

325

425

525

625

725

CFM

433

567

700

833

967

CFM

542

708

875

1042

1208

CFM

650

850

1050

1250

1450

S.P.

.05

.05

.05

.05

.06

S.P.

.10

.09

.09

.09

.11

S.P.

.15

.15

.15

.14

.18

S.P.

.22

.21

.21

.21

.25

B-9870 84"

13


F-100

F-278

Service Fixturesand Alarms

Remote Control Fume Hood Fixtures

Remote control valves have forged brass valve bodies forstrength and durability. Valves for gas, air, vacuum andspecial gases are of needle type design with a stainless steelfloating cone and stainless steel replaceable seat. Valves forsteam service have a flat Teflon valve disc and stainless steelreplaceable seat; valves for water service have a renewableunit including a stainless steel seat and volume control. Alloutlet assemblies are furnished with a polished chrome platedfinish. For acid and solvent resistant coatings add thefollowing suffix to part numbers.

Clear Epoxy 01White Epoxy 02Black Epoxy 03Sepia Bronze 04Metallic Aluminum 05

For factory setting of a service fixture, specify part number F-330 in addition to the service fixture number.

For factory setting and piping of service fixtures, specify partnumber F-300 in addition to the service fixturenumber.

F-100 - Remote service valve with angled hose cock outlet.For use with gas, air, vacuum, steam or other special gases.Specify type of service.

F-110 - Remote service valve with gooseneck, for use withwater; specify hot or cold water.

F-120 - Remote service valve with gooseneck and vacuumbreaker, for use with water; specify hot or cold water.

F-125 - Dual remote service valve with gooseneck, for use withhot and cold water.

F-130 - Dual remote service valve with gooseneck and vacuumbreaker, for use with hot and cold water.

TEST-RESET

B M C N a t i o n a l P r o d u c t s

Air Velocity Monitor & Alarm

F-278 Velocity Monitor measures the face velocity of the Fume Hood. The monitorincludes a visual safe indicator light, visual alarm indicator light, audible alarm anda test reset button which also manually silences the alarm. Field calibration requiresthe use of an optional air flow measuring device as shown on page 32.

F-110

F-120

F-125

F-130

28

24" 30" 36"

inside 12-20 1/26/06, 11:33 AM2

Interior LightingA fluorescent light fixture completed with tubes illuminatesthe interior of the ADA Fume Hood. The light fixture isisolated from the Hood interior by a sealed safety glasspanel. Relamping of the fixture is accomplished from thetop front of the superstructure.

OptionsIn addition to optional service and electrical fixtures for theADA Fume Hood, BMC also features an optional sash witha split viewing panel, secondary containment trough/airfoil, remote adjustable baffle, baffle screen, and air-flowmonitor. Any or all of these options can be incorporated tomeet specific needs or HOPEC requirements.

BMC/Laboratory Fume HoodsAirfoil ADAFume Hoods

BMC’s ADA Fume Hood is designed to meet the uniqueneeds of wheelchair operators. The ADA Fume Hooddelivers all the features and capabilities of our standardFume Hood line with special accommodations built in tomeet the specific requirements needed to provide a safe worksite for wheelchair operators.

Design

The Americans with Disabilities Act (ADA) prohibitsdiscrimination in hiring and promotion on the basis ofphysical disability. The BMC ADA Fume Hood is designedto provide a safe and comfortable work area for awheelchair bound person. The extended height of the sashalso makes the ADA Fume Hood a practical work stationfor a standing individual.

The ADA Fume Hood comes complete with a full framedcombination horizontal/vertical sliding sash. The sash isglazed with 7/32" laminated safety glass and is counter-weighted for one finger vertical operation. The fourhorizontal sliding panels glide on a dual track system foreasy access into the Hood.

Double wall construction of the Hood superstructure allowsfor easy installation of service fixtures and service lines.The entrance of the Hood is framed with inward angledmembers to provide for smooth movement of air into theHood. The interior lining is white “Resin-Chem” and has aremovable access panel on each interior side.

B-684 48" B-685 60" B-686 72" B-688 96"B-687 84"


12

BMC/Laboratory Fume HoodsElectrical Fixturesand Countertops

Electrical Services

Flush mount electrical service fixtures come complete with devicebox and stainless steel face plate.

Explosion proof fixtures meet Class 1, Group C & D requirements.Explosion proof outlets and switches must be mounted on the frontpanel of the base cabinet or the exterior side of the Fume Hood.

For factory setting of electrical fixtures, specify part number F-340in addition to the electrical fixture number.

For factory setting and wiring of electrical fixtures, specify partnumber F320 in addition to the electrical fixturenumber.

Factory wiring of explosion proof fixtures on application only.

F-200 - Single pole light switch, 115 volt, 15 amp.

F-210 - Manual motor starter switch with pilot light, 115 volt, 15amp. Heating element not included.



F-225 - GFI duplex receptacle, 115 volt, 15 amp.

F-260 - Explosion proof light fixture, specify two fixtures on hoods84" and over.

F-262 - Explosion proof receptacle.

F-264 - Explosion proof switch.

Countertops

B-8040 48"B-8050 60"B-8060 72"B-8070 84"B-8080 96"

ALLEN-BRADLEY

RESET

F-200

F-264

F-210

F-225

F-260

F-262

F-220F-221

Fume Hood work surfaces are molded from amodified epoxy resin that has been especially compoundedand cured to provide optimum physical and chemicalresistance required for a heavy duty laboratory workingsurface. Countertops are 1" thick with a 3/8" deep dishingto contain spills and have a non-glaring black finish.

If sinks or cupsinks are required, specify location.Front

29

inside 12-20 1/26/06, 11:33 AM1

Airfoil Add AirAssemblies

Airfoil Add Air Hood AssembliesThe five standard Fume Hood sizes are each available as acomplete assembly.



Rough-in Details

The static pressures listed above are for the hoods only. An appropriate amount will haveto be added to this figure to compensate for the pressure drop through the duct system.The total pressure drop through the hood and the duct system must be known to select theproper exhaust blower. Supply figures are based on 70% add air.

35"

22 1/2"

23 1/2"

22 1/2" 25 1/2" 25 1/2"

29"

Duct collar locations are as shown above. The center line of each collar is 8" from the backof the hood. The center line of the supply duct is 35 5/8" from the back of the hood. Thearea indicated by the dashed lines is designated for plumbing and electrical rough-ins. Allrough-ins should be kept within 7" of the wall and 18" from the floor.

54 1

/4"

31"

22"48

"

8"

7" 1"

30"

35 1/4"

40 1/2"

66 5

/8"

35 3

/4"

2 3/

8"

90" 24"

B-624 B-625 B-626

36"

23 1/2" 23 1/2"

B-627 B-628

26 1/2"26 1/2"

30"

35"

89 1

/4"

35 5/8"

40 7/8"

B-9280 96"B-9240 48"

COLLARSIZE

6" x 12"6" x 12"6" x 16"6" x 16"6" x 20"6" x 20"

(2)6" x 12"(2)6" x 12"(2)6" x 12"(2)6" x 14"


CFM650455850595

1050735

1250875

14501015

S.P..22.17.21.17.21.17.21.15.25.17

CFM867607

1133793

1400980

1667116719331353

CFM1083758

1417992

175012252083145824171691

CFM1300910

17001190210014702500175029002030

S.P..39.30.38.29.37.31.37.29.45.31

S.P..61.48.59.47.58.46.58.46.71.49

S.P..87.69.85.69.84.68.83.71

1.02.71

EXHSUPEXHSUPEXHSUPEXHSUPEXHSUP

HOODSIZE

48"

60"

72"

84"

96"

11

B-9270 84"B-9260 72"B-9250 60"




BMC/Laboratory Fume HoodsBMC/Laboratory Fume Hoods

F-425

Baths

F-420

Sinks, Drainsand Baths

Sinks

Sinks are available in a variety of sizes and configurations forinstallation in Fume Hoods.

F-400 - Oval epoxy resin cupsink, 3"x6", 1 1/2" NPT outletconnection.

F-401 - Oval polypropyene panel mount cupsink, 3"x6", withretainer nut, 1 1/2" NPT outlet connection.

F-402 - Rectangular epoxy resin cupsink, 13 3/4" x 4 1/2"x 5 1/2" with stainless steel straining screen, 1 1/2" NPT outlet.




Baths

Baths are available in steam, hot water or electric. Each bathis furnished with four sets of concentric rings which are spacedon 1" increments up to 6" diameter. Baths are constructed of 20gauge, type 304 stainless steel and come complete with aremote valve for mounting in the post of the Fume Hood. Size is18" x 18".

F-430 SteamF-431 Hot WaterF-432 Electric

Drains and Traps

F-420 - Epoxy resin sink outlet with retainer nut, 1 1/2" NPToutlet connection.

F-425 - Polypropylene p-trap with adjustable riser, 1 1/2" NPToutlet connection.

F-400

F-402

F-410F-411F-412

30

inside 1-11 1/26/06, 11:33 AM11

Fume Hood Superstructures are available in widths from 48" to 96", including BMC's unique 84" wide model as shown below. Service andelectrical fixtures shown are optional and must be ordered separately.

Interior LightingThe interior of the Add Air Fume Hood is brightly lit by amaximum width dual fluorescent tube light fixture. The fixtureis mounted behind a sealed safety glass panel to isolate thefixture from corrosive fumes and flammable vapors.Replacement of fluorescent tubes is accomplished from theexterior top front of the Fume Hood superstructure.

OptionsChoose from the variety of optional service fixtures availablefrom BMC. Service fixture and electrical outlet types andlocations are to be specified by the customer to fit eachparticular application. Mounting holes are provided in thesuperstructure for final on-site installation of optional equipment.

B-628 96"B M C / L a b o r a t o r y F u m e H o o d s A i r f o i l A d d A i rF u m e H o o d sT h e B M C A i r f o i l A d d A i r F u m e H o o d p r o v i d e s a d d e deconomy through the use of a front mount “add airp l e n u m ” t h a t c a n s u p p l y u p t o 7 0 p e r c e n t o f t h e t o t a l H o o dair volume requirement from an outside source.DesignThe superstructure entrance of the Add Air Fume Hood isframed with inward angled members that minimizeturbulence and provide smooth movement of air into theHood. This design allows for efficient operation of the FumeH o o d a t f a c e v e l o c i t i e s r a n g i n g f r o m 6 0 t o . 5 0 F P M .Additionally, the built-in bypass feature above the Hoodsash works to maintain a relatively constant face velocityat any sash position.

The front mounted add air plenum of the Airfoil Add AirFume Hood utilizes a series of diffusers and louvers toprovide a uniform flow of supply air to the face of the FumeHood. This uniform air flow allows for providing up to 70%o f t h e o v e r a l l a i r v o l u m e r e q u i r e m e n t s o f t h e H o o d t h r o u g ht h e a d d a i r p l e n u m .

As with other BMC Fume Hoods, the Add Air Hood comese q u i p p e d w i t h a f u l l v i e w l a m i n a t e d s a f e t y g l a s s s a s h w i t ha full width flush pull and counterweight for easyoperation. A lower airfoil acts as sash stop that provides a1 " s p a c e f o r a i r t o c o n t i n u o u s l y f l o w i n t o t h e H o o d a n da c r o s s t h e w o r k s u r f a c e .

Double wall construction of the superstructure providesadequate space on both sides of the Hood for installation ofservice fixtures and routing of plumbing and electrical lines.The lining of the interior work area of the Hood is whiteResin-Chem with removable interior access panels on bothsides. Removable exterior side panels provide easy accessto fixtures and their service lines.

B-624 48" B-625 60"10 B-626 72" B-627 84"B M C / L a b o r a t o r y F u m e H o o d s A c c e s s o r i e sa n d O p t i o n sV e n t K i t s

F-440 Vent Kits are used to vent acid or flammable storagec a b i n e t s t o t h e F u m e H o o d .

F-439Material OptionsThe design of the BMC Fume Hoods allows for easysubstitution of standard components with optionalmaterials.

Interior linings are available in minerit, PVC or stainlesssteel in lieu of our standard Resin-Chem.

Sash options include full framed, painted or stainless steelsash.

Sash tracks and lower airfoils are both available instainless steel.

Contact your BMC representative to assist you inspecifying these items.Baffle OptionsStandard Fume Hoods are equipped with an adjustable upperbaffle only. Other adjustable baffle options are availableas follows:

B-790 Lower Adjustable BaffleB-791 Single Point Remote Adjustable Baffle for 48", 60" and 72" HoodsB-792 Single Point Remote Adjustable Baffle for 84" and 96" HoodsF-440

31Fire ExtinguishersF-439 Automatic Fire Extinguisher units are available for in-stallation in Fume Hoods. Fire Extinguishers are activated by afusible link. The link melts at 165º F, opening the valve whichreleased a multipurpose ABC Dry Chemical. Cylinders are con-structed of stainless steel and come complete with mountingbracket. Fume Hoods 72" and wider4require the use of two FireExtinguishers for adequate projection.

inside 1-111/26/06, 11:33 AM10

Airfoil VariableVolume Assemblies

Airfoil Variable Volume AssembliesThe five standard Fume Hood sizes are each available as acomplete assembly.



Rough-in Details

B-9140 48" B-9150 60" B-9180 96"

54 1

/4"

31"

22"48

"

8"

7" 1"

30"

33 1/2"

66 5

/8"

35 3

/4"

2 3/

8"

90"

89 1

/4"

35"

33 7/8"





Airfoil VariableVolume Fume Hoods

Interior LightingA twin tube fluorescent light fixture provides illuminationof the Hood's interior surfaces. The fixture is recessed intothe interior Hood ceiling and protected behind a sealed safetyglass panel away from hazardous vapors and corrosivefumes. Tubes (included with Hood purchase) are easilyreplaced from the outside of the Hood superstructure.

OptionsA variety of optional service fixtures are available fromBMC for installation in the Variable Volume Fume Hood.Mounting holes for fixtures and electrical receptacles arepre-cut and capped when fixtures are not required.

Fume Hood Superstructures are available in widths from 48" to 96", including BMC's unique 84" wide model as shown below.Service and electrical fixtures shown are optional and must be ordered separately.

B-618 96"B-617 84"


The Variable Volume Fume Hood is specifically designedfor use with exhaust control systems provided by othermanufacturers that monitor and control the amount of airbeing exhausted from the Hood. The use of these deviceswill maintain a constant face velocity and greatly reducethe operating cost of the Fume Hood.

Design

A lintel at the upper front of the superstructure restricts theHood air intake to the front sash opening. By incorporatingany one of a number of commercially available VAVcontrols, the exhaust volume of the Hood can be varied tomaintain a specified face velocity regardless of sashposition.

The full view sash provides a clear, unobstructed view ofthe work surface and when fully opened, allows easyaccess to all areas of the Hood interior. The sash iscounterweighted for easy up/down operation and is madeof 7/32" laminated safety glass with a full width flush pull.

The lower airfoil acts as a sash stop designed to provide a1" gap (with sash closed) allowing air to continuously sweepthe countertop of the Fume Hood.

Double side wall Hood construction providesadequate space for mounting service fixtures. The interior“Resin-Chem” lining has removable access panels oneither side providing easy access for installation andmaintenance of service and electrical fixtures. Bothexterior side panels of the Hood superstructure are alsoremovable for access to lines.

B-614 48" B-615 60" B-616 72"

8

BMC/Laboratory Fume HoodsAccessories

Duct Transitions

Duct Transitions are designed to convert the rectangular collorof the BMC Fume Hood to a round collar.

Transitions are constructed of heavy gage coated steel and willwork with standard round ductwork.

F-500 6"x12" Collar to 9" Dia.F-501 6"x12" Collar to 10" Dia.F-502 6"x14" Collar to 9" Dia.F-503 6"x16" Collar to 10" Dia.F-504 6"x20" Collar to 12" Dia.

Y Branches

Transitions

Y-Branches

Duct Wash Down

F-508 Wash Down assemblies are suited for use withperchloric acid duct systems. Each nozzle is capable ofdelivering 3 gallons of water per minute at a water pressure of40 PSI. The Wash Down assembly is designed to be attachedto 12" dia. duct and has a 1/4" male pipe connection.

F-508B l o w e r s Blowers for both exhaust and supply are designed for efficient, quiet, continuous duty.Units have a forward curved impeller and come complete with a weatherproof drive cover.Spark resistant and corrosion resistant coatings are available upon request.

When using the chart on page 34, figure the equivalent of 15 linear feet of ductwork for

each 90 degree elbow. For complex exhaust systems, contact your BMC representative

for assistance in selecting a blower.Local Exhaust

F-509 F-509 The BMC Local Exhaust Hood is designed for use with

a t o m i c a b s o r p t i o n s p e c t r o p h o t o m e t e r s o r f l a m e

photometer equipment. Unit comes complete with a012" dia.

stainless steel cone, 8' of 6" dia. flexible duct and adjustable

support arm.

33Y Branches are used to connect two exhaust or supply ducts on

F u m e H o o d s t h a t r e q u i r e m o r e t h a n o n e e x h a u s t o r s u p p l y

c o l l a r . B r a n c h e s a r e c o n s t r u c t e d o f c o a t e d s t e e l a n d w i l l w o r k

w i t h s t a n d a r d r o u n d d u c t w o r k .



inside 1-111/26/06, 11:44 AM8

Airfoil BypassAssemblies

Airfoil Bypass Fume Hood AssembliesThe five standard Fume Hood sizes are each available as acomplete assembly.



Rough-in Details

Duct collar locations are as shown above. The center line of each collar is 8" from theback of the hood. The area indicated by the dashed lines is designated for plumbing andelectrical rough-ins. All rough-ins should be kept within 7" of the wall and 18" from thefloor.

B-9040 48" B-9050 60"

54 1

/4"

31"

22"48

"

8"

7" 1"

30"

33 1/2"

66 5

/8"

35 3

/4"

2 3/

8"

90"

35"

89 1

/4"


The static pressures listed above are for the hoods only. An appropriate amount willhave to be added to this figure to compensate for the pressure drop through the ductsystem. The total pressure drop through the hood and the duct system must be known toselect the proper exhaust blower.




356

Interior LightingA maximum width, two tube fluorescent light fixture,complete with tubes, is provided with the Airfoil BypassFume Hood. The light fixture is mounted above a sealedsafety glass panel isolating it from corrosive fumes andhazardous vapors. Tube lights are easily replaced throughthe top front of the Fume Hood superstructure.

OptionsA variety of optional service fixtures are available fromBMC for installation in the Bypass Fume Hood. Our BMCrepresentatives work closely with customers in specifyingthe type of fixtures and electrical receptacles required.

B-608 96"



Airfoil BypassFume Hoods

Continuous air flow across the work surface of the AirfoilBypass Fume Hood exhausts potentially hazardous vaporssafely away from the work environment, even with the sashclosed!

The Airfoil Bypass Fume Hood features an internalbypass opening located above the sash allowing for aconstant exhaust volume while maintaining the facevelocity. In operation, the bypass works automatically, inconjunction with the hood sash. The bypass adjustment ismade as the sash is opened and closed creating a relativelyconstant face velocity regardless of sash position.

Design

The Bypass Fume Hood comes equipped with a full viewsash providing an unobstructed view of the Hood interiorwork area. The sash, a glazed 7/32" thick laminated safetyglass is provided with a full width flush pull. Acounterweight provides for one finger operation of the sashat any position.

The entrance of the Hood is framed with inward-angledmembers. This angled frame works to minimize turbulenceand provide smooth movement of air into the Hood,resulting in a more efficient operation of the Fume Hood atface velocities ranging from 60 to 150 FPM. A lowerairfoil sash stop maintains a 1" space (below closed sash)that allows air to flow continuously across the worksurface inside the Hood.

Double wall construction of the Hood superstructure allowsfor easy installation of service fixtures and routing ofinterior plumbing and electrical lines. The interior of theAirfoil Bypass Fume Hood is white “Resin-Chem.”Removable access panels on both interior sides of the Hoodare standard features. The exterior superstructure sidepanels are also removable for easy access to servicefixtures and supply lines.

B-604 48" B-605 60" B-606 72" B-607 84"

The above illustration depicts the routing of service andelectrical lines in a typical Fume Hood. Unless specifiedothrewise, all service and electrical fixtures are shippedseparately for installation in the field. Piping, conduit andwire are not included and must be furnished by others inaccordance with local codes.

Light SwitchVac.

Vac.

Air

Air

Gas

GasC.W.Duplex Electrical Outlet

Flourescent Light

Rectangular Duct Collar

Removable Access Panel

CupsinkP-Trap

Waste Line

Supply LinesConduit

Shut-Off Valves

Junction Box

BMC/Laboratory Fume HoodsPlumbing Rough-inFluorescent LightThe exact routing of service lines will vary depending ont h e p o i n t o f o r i g i n a n d n u m b e r o f s e r v i c e s . T h e i l l u s t r a t i o n shown above shows the service lines feeding up throughthe Hood from the floor. Service lines can also be routedthrough the Fume Hood side wall from the ceiling.inside 1-111/26/06, 11:32 AM6

Figure 2 Poor Locations

The presence of cross-drafts will adversely affect theperformance or the Fume Hood. For this reason it is a good ideanot to locate the Fume Hood near open doors andwindows. High velocity air diffusers located directly in front ofthe Fume Hood could actually draw fumes out of the Hood andinto the room. Although there is no single preferred method fordelivery of make up air, it is a good idea to locate the Fume Hoodas far from the air diffuser as possible so that the air first sweepsthrough the laboratory working area and then into the Fume Hood.

Fume Hood Velocity SelectionSelection of the Fume Hood face velocity should be directly re-lated to the location of the Fume Hood. A Fume Hood in a goodlocation, as shown in Fig. 1, should operate properly at a facevelocity of 75 FPM. A poorly located Fume Hood, as shown inFig. 2, may require a face velocity of 125 FPM to maintain properperformance.

Since most fume hood installations require some type oflocation compromise, a face velocity of 100 FPM isusually the norm. Fume Hoods with a high heat source may re-quire slightly higher face velocities.

OSHA calls for, but does not require, a face velocity of 150 FPMfor Fume Hoods used with any of the 13 carcinogens listed inOSHA 1910.1003 et seq. (OSHA 1978). Studies have shown thathoods operated at face velocities of 150 FPM and greater oftenperform poorer than if operated at a lower face velocity, due todisruptive air turbulence at the perimeter of the Hood openingand in the wake of objects placed inside the work area of the Hood.

Fume Hood Blowers & DuctworkThe blower and ductwork control the amount of air moving throughthe Fume Hood. For this reason it is extremely important that theybe installed and maintained properly.

By using the chart on page 34, you can choose the correct blowerfor the Fume Hood you have selected.

Lineof

Traffic

Lineof

Traffic

Air ConditioningRegister

Hood

Center Table

Hood Base Cabinets

Base Cabinets

Sealed Windows

BMC/Laboratory Fume HoodsPlanning

Figure 1 Good Locations

Fume Hood SelectionThere are two main factors to consider when selecting a FumeHood style.

First consider the type of work being performed in the Hood. Theuse of perchloric acid or radioactive materials require a Fume Hoodspecifically designed for these materials. Large apparatus orcomplex set-ups may require the use of a low bench or walk-inFume Hood to accommodate the space requirements.

The second consideration in selecting a Fume Hood style is theair consumption of the hood. Operation of a Fume Hoodrequires a relatively large volume of room air.

If you determine that the amount of air being supplied to the roomis adequate to accommodate the exhaust volume of the Fume Hoodthe ByPass style Fume Hood would be an excellent choice.

If there is not enough supply air available, the Add Air style maybe the right choice.

The Variable Air Volume style Fume Hood is designed to be usedwith an adjustable damper system in the ductwork. The use of thisHood will, when used in conjunction with a VAV control system,drastically reduce the total amount of air consumed. This makesthe Variable Air Volume style Hood a good choice when trying toreduce air consumption for energy cost savings or when theresimply is not enough available supply air.

For more information see “Flow Patterns” on Page 3.

Fume Hood LocationsLocation of the Fume Hood is of prime importance, since a varietyof conditions will affect the performance of the Hood.

When selecting a location for the Fume Hood, operatorconvenience, work flow and exhaust duct locations should all beconsidered. In addition, an attempt should be made to keep thehood away from the line of traffic. It is both inconvenient anddangerous to install a Fume Hood so that the operator is forced towork in the line of traffic movement.

Lineof

Traffic

Lineof

TrafficAir ConditioningRegisters

HoodHood

CenterTable

CenterTable

Base Cabinets

Sealed Windows

4

BMC/Laboratory Fume HoodsSpecifications

Airfoil Bypass Fume HoodsConstructed as specified above. The Airfoil Bypass FumeHood superstructure has a white Resin-Chem interior lin-ing.

Airfoil Add Air Fume Hoods

The Add Air superstructure shall have an 18 gage, paintedsteel add air plenum. The plenum shall be capable of prop-erly distributing up to 70% of the air requirements of theHood. The add air plenum shall be of standard size and canbe added to any of the standard BMC Fume Hoods.

The interior lining of the Airfoil Add Air Fume Hood su-perstructure shall be white Resin-Chem.

Airfoil Radio Isotope Hoods

The interior lining and work surface of the Radio Isotopesuperstructure shall be type 304 stainless steel. Seams andjoints present in the interior and work surface shall bewelded to eliminate pockets, cracks and crevices that wouldpermit a buildup of radioactive materials.

The work surface shall be an integral welded part of thesuperstructure. It shall be watertight and furnished with araised edge to contain spills. It shall be properly reinforcedto support 200 lbs. per square foot up to a total weight of1,000 lbs. per Hood or base cabinet section.

An 18 gage type 304 stainless steel frame shall encase thelaminated safety glass sash. The vertical sliding sash shallride in type 304 stainless steel sash guides.

Interior removable access panels are provided for access tothe interior housing.

All other features of the Hood are as specified under "Con-struction."

Airfoil Perchloric Acid Fume Hoods

Perchloric Acid Fume Hood superstructures shall beidentified by a label indicating suitability for use withperchloric acid procedures. All exposed parts of thesuperstructure interior shall be seamless welded covedcornered, type 316, stainless steel.

The work surface shall an integral welded part of thesuperstructure. It shall be watertight and furnished with araised edge to contain spills. A full width drain through shallbe located below the baffle.

A water spray (wash down system) shall be provided forrinsing the area behind the baffle. Service fitting controlsfor the wash down system shall be external to the Hood,clearly identified and within easy reach.

An 18 gage, type 316 stainless steel frame shall encase thelaminated safety glass sash. The vertical sliding sash shallride in type 316, stainless steel sash guides.

Interior removable access panels are not provided onPerchloric Acid superstructures.

All other features of the Hood are as specified under"Construction."

Low Bench Hoods

Low Bench Fume Hood superstructures shall have a whiteResin-Chem interior lining. The sash shall consist of fourhorizontal sliding, laminated safety glass panels, with astainless steel edge trim. The panels shall ride on two tracksof extruded aluminum.

Two removable interior panels shall be located on each sideof the Fume Hood superstructure.

All other fixtures of the Low Bench Fume Hoodsuperstructure are specified under "Construction."

Walk-In Fume Hoods

Walk-In Fume Hood superstructures shall have awhite Resin-Chem interior lining. The sash shall consist oftwo vertical sliding, laminated safety glass panels as specifiedunder "Construction."

Two removable interior access panels shall be located oneach side of the Fume Hood superstructure.

All other features of the Walk-In Fume Hoodsuperstructure are as specified under "Construction."

37

inside 1-11 1/26/06, 11:32 AM4

Flow Patterns

Airfoil Bypass Hoods

The Airfoil Bypass Hoods have a double bypass to provideconstant exhaust volume and limit changes in face velocity.

The upper bypass functions automatically with the raising andlowering of the sash. The lower bypass provides a continuousair sweep of the work surface.

When hood top enclosures are used, a bypass grille must bespecified.

Airfoil Variable Air Volume Hoods

The Variable Air Volume (VAV) Hoods are designed to be usedwith exhaust control systems provided by other manufacturers.

In lieu of an upper bypass the VAV Hood has a lintel whichrestricts the air intake of the Hood to the sash opening and lowerbypass.

The commercially available exhaust control system will detectthe movement of the sash and adjust the volume of air requiredto maintain a constant face velocity.

Factory mounting of the exhaust controls is available whenspecified.

Airfoil Add Air Hoods

The Add Air Hoods provide up to 70% of the Hood exhaustrequirements. With a bypass similar to the Airfoil Bypass Hood,outside air is introduced through the add air plenum, thusminimizing the amount of conditioned room air required.

When outside temperatures are extreme, it may be necessary totemper the incoming air.




3


BMC/Laboratory Fume HoodsDefinitions

Exhaust Collar – Connection between exhaust duct andFume Hood through which all exhaust air passes.

Face Velocity – Speed of air moving into Fume Hoodentrance or access opening, expressed in feet per minute(FPM).

Liner - Interior lining used for side, back, top enclosurepanels, exhaust plenum and baffle system of a laboratoryFume Hood.

Lintel - Portion of laboratory Fume Hood front locateddirectly above the access opening.

Resin-Chem - White chemical resistant fiberglassreinforced thermoset resin sheet.

Sash - Movable transparent panel set in Fume Hoodentrance.

Service Fitting - Fixture laboratory plumbing mounted onthe Fume Hood intended to control the supply of piped gasesand liquids for laboratory use.

Static Pressure - Air pressure in laboratory Fume Hood orduct, usually expressed in inches of water.

Static Pressure Loss - Measurement of resistance createdwhen air moves through a duct or hood, usually expressedin inches of water.

Superstructure - That portion of a laboratory Fume Hoodthat is supported by the countertop.

Add Air - Supply air delivered to a laboratory Fume Hoodto reduce room air consumption..

Air Foil – Curved or angular members at the Fume Hoodentrance.

Air Volume – Quanity of air normally expressed in cubicfeet per minute (CFM).

ASHRAE - American Society of Heating, Refrigerating andAir Conditioning Engineers.

Baffle - Panel located across the Fume Hood interior backwhich controls the pattern of air moving into and throughthe Fume Hood.

Blower - Air moving device, sometimes called a fan,consisting of a motor, impeller and housing.

Bypass - Compensating opening that maintains a relativelyconstant volume exhaust through a Fume Hood regardlessof sash position and that functions to limit the maximumface velocity as the sash is lowered.

Canopy Hood - Suspended ventilating device for non-critical use to exhaust only heat, water vapor and odors.

Countertop - Work surface resting on a base cabinet.

Duct - Round, square or rectangular tube used to enclosemoving air.

Duct Velocity - Speed of air moving in a duct, usuallyexpressed in feet per minute (FPM).

38

inside 1-11 1/26/06, 11:32 AM3

Introduction

you with maximum safety at minimum cost.Incorporating standard options, such as combinationsashes and sash stops, allows you to maintain facevelocities while exhausting less air. Hence, the BMC FumeHood costs less to operate than other conventional units.

REFERENCES – The American Industrial HygieneAssociation, The American Conferences of GovernmentalIndustrial Hygienists and the American Society ofHeating, Refrigerating and Air-Conditioning Engineershave all published guidelines on Fume Hood facevelocities and operating procedures.

Because the performance of a Fume Hood is greatlyaffected by the surrounding conditions, the recommendationsin this catalog are based on normal or averageconditions. For recommendations on ideal or extremeconditions, the guidelines published by the abovereferenced agencies should be followed.

SPECIFICATIONS – BMC Fume Hoods are manufacturedin strict accordance with the specifications shown in thiscatalog. However, continuous testing and research mayresult in design and specification changes withoutadvance notice.


2

GENERAL – The name BMC has long been synonymouswith quality and longevity. Our newly redesigned FumeHood is a proud example of this reputation. Over 50 yearsof experience, combined with state-of-the-artengineering and testing facilities, provide you with aFume Hood unsurpassed in quality and performance.

TESTING – Safety should be the number one concernwhen choosing a Fume Hood. That is why BMC testsand certifies each style Fume Hood in accordance withthe current ASHRAE method of testing performance oflaboratory Fume Hoods.

The ASHRAE 110 test procedure is an industrystandard, recognized by SEFA and the AmericanConference of Governmental Industrial Hygienists, forsafe Fume Hood performance.

Our test facility is available for you to witness theASHRAE test procedure or to test special designs. Tomake arrangements to visit our test facility, contact yourlocal BMC Representative or our Main Office inMuskegon, MI.

DESIGN – The design of the BMC Fume Hood provides


NOTES:

39

inside 1-11 1/26/06, 11:32 AM2

Airfoil

ADA Fume Hoods.............................................................12

ADA Fume Hood Assemblies............................................13

Add Air Fume Hoods........................................................10

Add Air Fume Hood Assemblies........................................11

Bypass Fume Hoods........................................................... 6

Bypass Fume Hood Assemblies......................................... 7

Low Bench Fume Hoods....................................................18

Low Bench Fume Hood Assemblies.................................19

Perchloric Acid Fume Hoods............................................16

Perchloric Acid Fume Hood Assemblies...........................17

Radio Isotope Fume Hoods................................................14

Radio Isotope Fume Hood Assemblies..............................15

Variable Volume Fume Hoods........................................... 8

Variable Volume Fume Hood Assemblies........................... 9

Walk-In Fume Hoods.........................................................18

Walk-In Fume Hood Assemblies........................................19

Alarms...................................................................................28

Anemometer..............................................................................32

Baffle Options.........................................................................31

Base Cabinets.........................................................................26

Baths.......................................................................................30

Blowers..............................................................................33-34

Canopy Hoods.........................................................................26

Ceiling Enclosures..................................................................27

Countertops.............................................................................29

Definitions.............................................................................38

1

Demonstration Fume Hood....................................................22

Drains....................................................................................30

Electrical Fixtures...................................................................29

Filler Panels............................................................................26

Filters.....................................................................................32

Fire Extinguishers..................................................................31

Flow Patterns......................................................................... 3

Introduction........................................................................... 2

Lattice Assemblies.................................................................32

Local Exhaust.........................................................................33

Material Options.....................................................................31

Planning................................................................................. 4

Plumbing Rough-In................................................................35

Portable Fume Hood...............................................................23

Sash Options..........................................................................27

Service Fixtures.......................................................................28

Sinks......................................................................................30

Smoke....................................................................................32

Specifications..........................................................................36

Spray Booth.......................................................................24-25

Thin Wall Fume Hood............................................................20

Thin Wall Fume Hood Assemblies........................................21

Transitions..............................................................................33

Traps........................................................................................30

Vent Kits..................................................................................31

Wash Down............................................................................33

Y Branches.............................................................................33

Table of Contents BMC/Laboratory Fume HoodsBMC/Laboratory Fume Hoods

NOTES:

40

inside 1-11 1/26/06, 11:32 AM1

BMCLaboratory Fume Hoods

Represented By:

BMCP.O. Box 4089Muskegon MI 49444Telephone: (231) 733-1206FAX: (231) 733-2116e-mail: [email protected] page: www.bmclab.com

© BMC 2006

M E M B E R

SEFASCIENTIFIC

EQUIPMENT &

FURNITURE

ASSOCIATION

Cover 1/27/06, 11:12 AM1

represented by - longoschools.com laboratory fume hoods represented by: bmc p.o. box 4089 muskegon...

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