Butterfly Valves

Proven Reliability

For Marine

Applications

Easy Installation Long Service Economical MaintenanceUsers have acclaimed Demco butterfly valves as the most durable of all resilient-seated butterfly valves in the industry. Use Demco for your next application. Its the right choice!

Demco Butterfly Valves The Best Value Delivered For...

Features and Benefits:2" through 36"

Easy To Actuate Large top flange Flatted stem 2" 12" Single stem key 14" 36"

Blowout Proof Stem Tangential pin retains stem Retaining pin located in dry stem

journal prevents pin corrosion from line fluid

Positive Stem/Disc Orientation Rectangular stem drive 2" 24" Stem key drive 30" 36" Disc position clearly indicated

Stem flats on 2" 12" Stem key slot on 14" 36"

Flexible Offering Wide material selection Multiple shut off pressures:

Size PSI2" 12" 0 (Throttling)

50200285

14" 36" 0 (Throttling)50150

Bronze Bearings Eliminate stem seizures Provide reliable load support Minimize torque

Dry Stem Journal Line fluid does not contact

stems guaranteed Eliminates corrosion Protects stem drive for long,

trouble-free service

High Flow Disc Minimal stem boss in flow path

Integral Flange Seals No gaskets or O-rings required

End-of-Line Service to:200 psi 2" 12"150 psi 14" 36"

Hard-Backed Cartridge Seat Easier Installation Allows installation in closed

position for use withfail-close actuators

Eliminates high torque and premature failure caused by elastomer distortion as found in other seat designs

Manufactured in our Oklahoma City plant which is certified to the ISO 9001 quality rating.

4" Demco NE-C Butterfly ValveMade in the USA

Series NE-I Valves*Sizes 2" to 12"

The Series NE-I is suited for a wide rangeof applications in many industries. This shortneck design is offered in a wide variety of bodymaterials. The valves are designed for installa-tion between ANSI 125/150 flanges.

Series NE-C Valves*Sizes 2" to 12"

The NE-C series consists of general purpose valves, available in both wafer and lugstyles. Neck length provides full clearance ofthe valve top over two inches of insulation onANSI 150 pipe flanges.

Series WF Valves*Sizes 30" and 36"

Series WF valves are designed primarilyfor water service. Shaft diameters, seat, body-shell thickness and disc design conform toClass 75B, Specification AWWA C504. Theoff-center disc presents a 360-degree sealingedge for drop-tight shutoff. A centering adjust-ment and stem-thrust bearing ensure uniformdisc seating. The steel reinforced rubber seatis bidirectional, so it seals against pressurefrom either side. Maintenance is easy becausethe seat can be replaced on the job site withoutdismantling the valve. For salt water and mildchemical service, the body can be plastic coated.

*The NE-C lug, NE-I lug and wafer, NE-D wafer, NF-C, and WF wafer and flanged valves can be supplied in conformance with Title 46 of the Code ofFederal Regulations, Part 56 of the U. S. CoastGuards Marine Engineering Regulations as well asthe American Bureau of Shipping Standard. Inaddition, a Military Series is offered to conform tospecification MIL-V-22133 C (SHIPS).

Series NE-D Valves*Sizes 2" to 12"

Series NE-D valves have short neck bodies and are notched to fit popular light-weight flange patterns. Ideal for use in bulkmaterial handling and the transport industry.Valves will also center in ANSI 125/150flanges.

Series NF-C Valves*Sizes 14" to 36"

NF-C Series valves are available in bothwafer or lug styles. Wafer bodies have twodrilled locating lugs at the top and bottom toensure centering between ANSI 150 flanges.Bronze bearings are installed on both stems forminimum operating torque.

Series WF Butterfly with Gear Operator

Series NE-C Lug Butterfly Valve with Gear Operator

Series NE-D Butterfly Valve with 2-Position Handle

NF-C Waferwith Gear Operator

Series NE-I Butterfly Valvewith 10-Position Handle

Demco Butterfly Valve Designs

ActuatorsDemco pneumatic actuators are avail-

able in double-acting or fail-safe springreturn models. Series DR actuators are com-pact, high-torque, piston actuators. Series Ractuators incorporate a heavy-duty, enclosedrack-and-pinion linkage. Diaphragm actua-tors are suitable for low-pressure, pneumaticservice with Series R enclosed, rack-and-pin-ion type linkage. Electric actuators are usedwhen compressed air is not available forpneumatic operations.

Stem ExtensionsFabricated from carbon steel parts, stem

extensions are contained in a tubular hous-ing. Gaskets or O-rings seal the stem exten-sion at top and bottom. These extensions arefabricated to specified lengths.

Butterfly Valve HandlesThree basic handle designs interchange

on any 2" to 12" Demco Butterfly Valve. Thelocking handle consists of a latch thatengages in a notched throttle plate at 10 discpositions. Two-position throttle plates areavailable as an option. Upward pressure onthe latch release the handle for movement.Memory-stop handles provide throttlingwhich is infinitely adjustable and can be setby a lock nut with a memory-stop setting(adjustable open stop).

Handles are available in basic trim, cor-rosion-resistant trim and sanitary trim.

Gear OperatorsDemco weatherproof gear operators are

offered with a choice of handwheel, chain-wheel or square nut. The worm gearing hasself-locking set screws to control open andclosed positioning or an optional adjustablememory stop for "balance return" to a presetopen position after closing.

Electric Actuator Gear Operator

Series R Actuator

Stem Extension on Series NE-I Butterfly Valve

Butterfly Valve Accessories

Demco Butterfly Valves The Right Choice!Whatever your resilient seat butterflyvalve application, the Demco butter-fly valve is right for the job. To placean order or find out more, contactthe representative nearest you.

Series DR Actuator

Use our W-K-M High PerformanceButterfly Valve for your high pressure,high temperature marine applications.

Deep stuffing box with stainless steel fasteners, standard.

Positively retained stem.

Available with patented, fire tested seat.

Capscrews are outboard oflading to prevent corrosion.

Heavy duty eccentric disc withwide sealing area designed toreduce seat wear.

DataSizes: Class 150, 3-24; Class 300, 3-24; Class 600, 3-12.Body Type: Flangeless wafer, single flange threaded lug.Working Pressure: To 1480 psi.Temperature: To 1000 F.Materials: Stainless steel, Carbon steel and alloys.

For more information on the W-K-M Butterfly Valves write or call for Catalog TC859.

Satisfied Customers:

Allied Shipyard

Avondale Industries

Bath Iron Works (Congoleum Corp.)

Bollinger Machine Shop and Shipyard

Bremerton Naval Shipyard

Burton Shipyard

Electric Boat (General Dynamics)

Equitable Shipyard

Far East Levingston Shipbuilding

Halter Marine

Lee Vac Shipyard (Lee Vac Corp.)

Lockheed Shipyard

McDermott Shipyard

Main Iron Works

Moss Point Marine

National Steel and Shipbuilding Co. (NASSCO)

Newport News Shipbuilding and Drydock (Tenneco)

Norfolk Shipbuilding and Drydock

North American Shipbuilding

Philadelphia Naval Shipyard

Portsmouth Naval Shipyard

Puget Sound Naval Shipyard

Quality Shipyards

Seacor Marine

Service Marine Industries

Southern Shipbuilding

Tacoma Boatbuilding

Tidewater Marine

Todd Shipyards

Trinity Marine Group

Available Materials, Demco Marine Butterfly Valves*SERIES

* Other material options available, consult factory** 17 4 PH Stainless Steel, some sizes.

NE-C NE-I NE-D NE-C WF2-12 2-12 2-12 14-24 30-36

Standard Special Order m

Demco Marine and W-K-M Dynacentricbutterfly valves conform to Title 46 ofthe Code of Federal Regulations, Part56 of the U.S. Coast Guards MarineEngineering Regulations as well as the American Bureau of ShippingStandard.

Stems416 Stainless Steel 316 Stainless Steel** 303 Stainless Steel Monel DiscsDuctile Iron/Nickel Plated Ductile Iron/SS Edge Aluminum Bronze 316 Stainless Steel Monel mHastelloy C Alloy 20 SeatsBuna N Black Neoprene Hypalon EPT Viton BodiesDuctile Iron Bronze m mSteel m mStainless Steel m mEpoxy Coated Iron or Steel m m m m m

PO Box 94700

Oklahoma City OK 73143

Telephone 405 631 1321

Fax 405 629 0420

Sales Offices and Warehouse Locations

DomesticAuburn, Alabama Bakersfield, CaliforniaSherman Oaks, California Wilmington, Delaware Naperville IllinoisCharlestown, IndianaHouma, Louisiana New Orleans, Louisiana Waltham, MassachussettsOklahoma City, OklahomaTulsa, Oklahoma Corpus Christi, Texas DeSoto, Texas Houston, Texas Odessa, Texas Casper, Wyoming

CanadaCalgary, AlbertaEdmonton, Alberta

Manufacturing Locations

DomesticOklahoma City, OklahomaMissouri CIty, Texas

CanadaEdmonton, Alberta

This list includes major manufacturing and sales locations. Contact your nearest Cooper Cameron Valves representative for locations not included on this list.

Cooper Cameron Corporation Cooper Cameron Valve Division 04/96/PDF TC1045