GR SeriesBetween Bearing,External GearPump

Bulletin PS-60-3a (E/A4)

Pump Division

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Pump Division

Pump SupplierTo The WorldFlowserve is the

driving force in theglobal industrial

pump marketplace.No other pumpcompany in the

world has thedepth or breadth

of expertise inthe successfulapplication of

pre-engineered,engineered andspecial purpose

pumps andsystems.

Pumping SolutionsFlowserve is providing pumpingsolutions which permit cus-tomers to continuously improveproductivity, profitability andpumping system reliability.

Market Focused Customer SupportProduct and industry specialistsdevelop effective proposals andsolutions directed toward marketand customer preferences.They offer technical advice andassistance throughout eachstage of the product life cycle,beginning with the inquiry.

Dynamic TechnologiesFlowserve is without peer in thedevelopment and application ofpump technology, including:• Hydraulic engineering • Mechanical design• Materials science• Intelligent pumping• Manufacturing technology

Broad Product LinesFlowserve offers a wide rangeof complementary pump types,from pre-engineered processpumps, to highly engineeredand special purpose pumpsand systems. Pumps are builtto recognized global standardsand customer specifications.

Pump designs include:• Single stage process• Between bearing

single stage• Between bearing

multistage• Vertical• Submersible motor• Rotary• Reciprocating• Nuclear• Specialty

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Pump Division

Sier-BathTwo-Screw

Typical Applications• Process industries

– Paints– Soaps– Gels– Polymers

• OEM– Filtration equipment– Lubrication units– Fire foam systems

• Marine– Engine room fuel– Engine room

lubrication• Petrochemical

– Viscous crude oil– Asphalt– Tars– Grease

• Power plants and utilities– Fuel unloading– Fuel oil transfer– Lube oil supply

Complementary Pump Designs• GAX Series double

helical gear pumps• Gearex double helical

gear pump• Hydrex double helical

gear pump• Sier-Bath Two-Screw

gear pump• HS reciprocating gear

pump

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Designed for Smooth, EfficientHandling of Viscous LiquidsThe GR Series between bearing,herringbone gear pump haslong been a work-horse withina multitude of industrial marketsdue to its dependability,efficiency and low life cycle cost.

Superior External HerringboneGear DesignDesigned to reliably handle viscous fluids across a broadrange of flows and pressures,the GR Series’ simple betweenbearing gear design is the mostrobust in the industry.

Benefits of the GR include:• Pulse-free operation • Mechanically and

hydraulically balanced• Self-priming• No gear box required• Speeds to 1800 rpm• Run dry capability when

packed• Ease of maintenance• Low NPSHR• Only one mechanical seal• No external lubrication

required• Improved reliability• Minimal shaft deflection• Long mechanical seal life• Reduced bearing loads• Superior high pressure

capability• Suitable for fluids with poor

lubricating characteristics • Reduced wear rates

GR SeriesBetween Bearing,

External GearPump

GAS

Gearex

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Pump Division

GR SeriesBetween Bearing,

External GearPump

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GR Series pumps provide highefficiency, pulse-free pumping,even under the most challengingconditions. They are designedto handle viscous fluids acrossa broad spectrum of flowsand pressures. The GR Series’simple external design has onlytwo moving parts and only oneshaft seal to insure long lifeand ease of maintenance.

Available in standard sizesfrom 40 mm to 200 mm(1.5 in to 8 in) ports, the GRSeries pumps are self-priming.Standard construction is castiron and carbon steel.

High Speed Capabilitytranslates into lower costsand higher efficiency.• Only one coupling guard• No speed reducers• Higher speed motors

Sideplates and body aredoweled to insure accurateinternal alignment. Jointsare ground to maintainclearances and eliminatethe necessity of gaskets

Convertible Stuffing Boxallows for ample packing or mechanical seals to beused for greater flexibility

Large, Unobstructed Suction and Dischargepassages keep entrancelosses and turbulence to a minimum

High Capacity Double Row Roller Bearingsare anti-friction to assurelong life

Babbitted Carbon SleeveBushings may be usedwhen handling liquids withpoor lubricity or lowviscosities. Also availablein antimony impregnatedcarbon for high temperatureapplications

Shafts are fine-grain, hotrolled medium carbon steeland are generously sized tominimize deflection

Operating Parameters• Flows to 275 m3/h (1200 gpm)• Pressures to 35 bar (500 psi)• Temperatures to 350°C

(650°F)• Viscosities to 33 000 cps

(1 million ssu)• Speeds to 1800 rpm

Back Pullout Design facilitatesmaintenance by allowing fasteraccess to pump internals andenables inspection without disturbing piping

Extra Deep Jacketed Stuffing Boxis available for hard-to-handlesolutions and to cool or heat packing

Between Bearing GearDesign minimizes shaftdeflection and reducesbearing loads. High pressure and high speedcapabilities are improved,extending pump life andimproving reliability

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Dual Stuffing Boxextends pump life inhigh suction pressureapplications.

Optional MechanicalSeal may be used in lieuof packing. Special dutyseals also are available.

Pump Division

Design BenefitsFlexibility• Variety of mounting

arrangements• Horizontal and vertical suction

and discharge openings• Stuffing box accommodates

packing or mechanical seals• Product lubricated bearings

Reliability• Minimal shaft deflection• Reduced bearing loads • Accurate alignment with two-

piece doweled construction• Reduced wear rates

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Herringbone Gear Benefits• Quiet, pulse-free flow• Better load carrying ability,

greater strength and minimalhydraulic shock

• Gradual, continuous geartooth engagement insuringsmooth flow and no airentrapment

• Elimination of end thrust andno need for thrust bearingswith inherently hydraulicallybalanced design

• High speed pump capability • Off-the-shelf motors• Durable cast iron construction

for maximum wear resistance

Standard ConfigurationsThe GR pump is available inthree basic gear widths andwith multiple options. With itsmodular design, the GR can becustomized to satisfy a widerange of applications.

GR – Standard gear widthGRW – Wider gears for highercapacitiesGRH – Narrower gears for higher pressures

Efficiency• Highly efficient opera-

tion over broad rangeof speeds, pressuresand viscosities

Cost Savings• Extended life due

to reduced bearing load and minimal shaft deflection

• No speed reducers• Only one coupling

guard

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Standard Materials of ConstructionCast Steel

ASTM A108, Class 1040Cast Steel

Cast Iron

ASTM A108, Class 1040Carbon Steel

Graphited

Cast Iron

ASTM A48, Class 40Cast Iron

Cast Iron

ASTM A108, Class 1040Carbon Steel

Acrylic Yarn

Component

Body, Stuffing Box,Bearing Cover,

Gland, Sideplates

Gears

Shaft

Packing

Pump Division

Direct V-Belt Drive optionincludes inboard bearing withmechanical seal to carry theload of mechanical power transmission equipment without shaft deflection.

Optional Jacketed Pump Bodyallows heating or cooling of liquids before start-up andprevents overloading of driverwhen pumping viscous fluids.

Available Integral SafetyRelief Valve provides short-term emergency bypass.

Additional Options• Mechanical seal• Jacketed stuffing box• Dual stuffing box

with external bearing optionfor high suction pressures

Quick Selection ChartRefer to the chart at theright for quick selection of the GR pump modelcorresponding to thedesired flow rate. Theranges shown are basedon typical viscositiesand speeds and assumezero differential pressure. The chart’s purpose isto direct the user to theappropriate performancecurve, not to be a substi-tute for it.

Options andTechnical Data

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INSUROCK® Low-Friction Wearplatesmay be used to reducesideplate and gear wear in low viscosityapplications, significantlyreducing total life-cyclecost. Field retrofit kitsare also available.

GR Hydraulic Coverage

® INSUROCK is a registered trademark ofRichardson Company, Inc.

Flow

(gpm

)

Pump Model

1.5 GR 2 GRW 2 GR 2.5 GRW 2.5 GR 3 GRW 3 GR 4 GRW 4 GR 5 GRW 5 GR 6 GR 8 GR

1200

1000

800

600

400

200

0

250

200

150

100

50

0

Flow

(m3 /h

)

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© TriCom, Inc., 2005, All Rights Reserved.

Pump Division

Global Engineered Services

and Support

Total Cost Reduction

Asset Management

Product Life Cycle

Performance Re-rates

Site Diagnostics

Repair Services

Energy Management

Spare Parts

Maintenance Contracts

Materials Upgrades

Turnkey Services

Field Repairs

Installation

Project Supervision

Commissioning

Equipment Upgrades

Condition Monitoring

Systems Analysis

Field Machining

Service DedicationFlowserve Engineered Services isfocused on providing customerswith uncompromising service andsupport, where and when needed.Dedicated to delivering the high-est quality support, EngineeredServices integrates its extensivepump and materials engineeringknowledge with creative servicesolutions. Engineered Servicesfully understands the businesschallenges facing customers andis prepared to manage solutionsto succeed as a team.

A worldwide network of serviceand repair centers staffed byhighly skilled engineers andtechnicians is available aroundthe clock, seven days a week torespond to customer queries, to evaluate and troubleshootproblems and to provide reliable solutions.

Strength of Experience,Commitment to ExcellenceFlowserve has long servedindustries requiring superiorequipment performance andservice life.• Oil and gas production• Hydrocarbon processing• Chemical processing• Water resources• Power generation• Nuclear• Mining and mineral processing• Pulp and paper • General industry

Engineered Services is dedicatedto maximizing equipment performance and providing reliability-centered maintenanceprograms for pumps and relatedequipment, regardless of manu-facturer. Using the FlowStar™asset management software,Engineered Services tracks performance and supportsimprovement programs using aservice life cycle cost businessapproach. The results areimproved reliability andincreased profitability.

Business Partner Flowserve partners withcustomers to respond tothe dynamic businessconditions that affectthem. Flowserve will workwith customers to driveefficiency, maximizethroughput and controlprocess quality. Whetheruser needs involve on-site technical assistanceor broader projectplanning with full turnkeyresponsibility, FlowserveEngineered Services willdeliver professional,reliable results.

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To find your local Flowserve representative please use the Sales Support Locator System

found at www.flowserve.com

Or call toll free: 1 800 728 PUMP (7867)

Your local Flowserve representative:

Pump Division

USA and CanadaFlowserve CorporationPump Division5215 North O’Connor Blvd.Suite 2300Irving, Texas 75039-5421 USATelephone: 1 972 443 6500Telefax: 1 972 443 6800

Europe, Middle East, AfricaFlowserve CorporationPump DivisionVia Rossini 90/9220033 Desio (Milan), ItalyTelephone: 39 0362 6121Telefax: 39 0362 303396

Latin America and CaribbeanFlowserve CorporationPump Division6840 Wynnwood LaneHouston, Texas 77008 USATelephone: 1 713 803 4434Telefax: 1 713 803 4497

Asia Pacific Flowserve Pte. Ltd.Pump Division 200 Pandan Loop #06-03/04Pantech 21Singapore 128388Telephone: 65 6775 3003Telefax: 65 6779 4607

Flowserve... Supporting Our CustomersWith The World’s LeadingPump Brands

Jeumont-Schneider™Jeumont-Schneider™

Printed in U.S.A.February 2005

© Flowserve Corporation

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