FLOWSERVE CORPORATION

GA / GR / Gearex Pumps

Rotary Gear PumpsProduct Training Program

April 2017

The Major Pump Groups

10

100

1,000

10,000

100,000

1,000,000

Rotary Recip'g Centrifugal

Visc

osity

Lim

it (S

SU)

The Major Pump Groups

Centrifugal

ReciprocatingRotary

Positive Displacement

All PumpsAll Pumps

Gear Pump Types

External gear typeInternal, "gear-within-a-gear" type

Gear Pumps

Rotary PumpsRotary Pumps

Other PD Pump Types

Internal Gear

Screw

Lobe

Sliding Vane

How an External Gear Pump Works

1. As the gears come out of mesh, they create expanding volume on the inlet side of the pump. Liquid flows into the cavity and is trapped by the gear teeth as they rotate.

2. Liquid travels around the interior of the casing in the pockets between the teeth and the casing (referred to as “locks”). It does not pass between the gears.

3. The meshing of the gears forces liquid through the outlet port under pressure.

The displacement is directly proportional with speed.

Basic Features

• Gear pumps use close running clearances to seal suction from discharge pressure and provide increasing volumetric efficiency with increasing viscosity

– Flow constant over varying pressures– Flow directly proportional to speed– Power directly proportional to speed– Efficiency increases with velocity

Head and Flow Curves - Theory

Capacity (GPM)

Hea

d (fe

et)

PD vs Centrifugal Pumps – Actual Curves

PD Pump Centrifugal Pump

Flowserve Offering

Engineered (API 676)2nd Ed. Compliant

GRHigher Flow/Head

GALower Flow/Head

Pumping Gear Types

Quietest operation Gradual mesh Hydraulically balance

Spur Helical Herringbone

GAX Series

• 7 sizes• Up to 120 GPM• Up to 25,000 SSU (5,500 CP)• Up to 1,800 RPM

GAX Coverage

120 GPM

GAX Series

GAX Features

Sleeve Bearings

Mechanical Seal

Safety Relief Valve

Inboard Bearings(for belt drives)

GAX Mounting Options

GAF GAS GAC

GAX Ordering Code

1 G A S M 0 D 0

Basic Size Construction Code1, 2, 3, 4, 5, 6 or 7 0 - Standard constructionSee Section 2061-2 for GAS & GAF

1 - 56C frame (GAC only)Product Designation 2 - 143 / 145TC frame (GAC only)G - GAX Series gear pump 3 - 182 / 184TC frame (GAC only)

4 - 213 / 215TC frame (GAC only)Materials of ConstructionA - Cast iron Bearing Material

D - CarbonMounting Configuration B - Bronze (150 psi maximum)S - Foot mountedF - Flange mounted Relief Valve ConfigurationC - Close coupled (sizes 1 through 4) 0 - None provided

1 - Provided with 0-100 psi range. ForSealing Configuration higher ranges, see Section 2061-3P - Packing (not with GAC) pages 4, 8, or 14 for optional MMN'sM - Mechanical seal (Buna-N)I - Seal w/ inboard bearing (not with GAC)

1 G A S M 0 D 0

Basic Size Construction Code1, 2, 3, 4, 5, 6 or 7 0 - Standard constructionSee Section 2061-2 for GAS & GAF

1 - 56C frame (GAC only)Product Designation 2 - 143 / 145TC frame (GAC only)G - GAX Series gear pump 3 - 182 / 184TC frame (GAC only)

4 - 213 / 215TC frame (GAC only)Materials of ConstructionA - Cast iron Bearing Material

D - CarbonMounting Configuration B - Bronze (150 psi maximum)S - Foot mountedF - Flange mounted Relief Valve ConfigurationC - Close coupled (sizes 1 through 4) 0 - None provided

1 - Provided with 0-100 psi range. ForSealing Configuration higher ranges, see Section 2061-3P - Packing (not with GAC) pages 4, 8, or 14 for optional MMN'sM - Mechanical seal (Buna-N)I - Seal w/ inboard bearing (not with GAC)

GR Series

• 16 sizes in CI or CS• Up to 1,100 GPM• Up to 500 PSI• Up to 1 Million SSU

(200,000 CP)• Up to 1,800 RPM and 650° F

GR Coverage

1000 GPM

GR Features

Jacketed Body(Hi-Temp)

Inboard Bearing(Belt Drive)

Insurok Wear Plate(<400SSU/75cp)

Dual Stuffing Box(Hi Suction Pressure)

GR Features

• Bronze– Dirty Services– >100SSU– <350°F

• Babbitt Impregnated Carbon– <100SSU– <350° F

• Antimony Impregnated Carbon– Dirty Services: >350° F– All Services: >500° F

Sleeve Bearings

GR Bearing Considerations• Roller Bearings: Standard Configurations

– Clean Viscous Liquid up to 500° F• Bronze Sleeve Bearings

– Dirty services above 100SSU/below 350° F• Babbitt Impregnated Carbon

– Clean services below 100SSU and below 350° F• Antimony Impregnated Carbon

– Dirty services above 350° F– All services above 500° F

GR Sealing Consideration• Packed Box: Standard Configuration

– Limited to 300° F on standard packing• Standard Mechanical Seal: Type 1/51

– BCRKR: Limited to 240°F / 5,000SSU max– VCRKR: Limited to 300° F

• Inboard Bearing Configuration– Limited to 240° F max

• All Applications above 300° F– Refer to Factor / FSD

GR Pressure Consideration• Cast Iron GR

– 10 psig suction below 75 SSU– 50 psig suction above 75 SSU

• Cast Steel GR– 50 psi suction above 200 SSU– NOT recommended below 200 SSU

• Insurok Wear Plates– 50 psig suction / 250° F limit

• Double Stuffing Box Configuration– 100 psi suction limit

GAX/GR Selling Features

• Higher Speed Capability– 1800 RPM at lower

viscosities and smaller sizes

– Reduced need for gearboxes, couplings, and guards

– Higher system efficiency without gearbox

GAX/GR Selling Features

• Back Pull-Out Design– Quick access– Undistributed system for

inspections– Ease of maintenance

GAX/GR Concerns• Applications to Carefully Apply:

– Solidification: steam jacketing is a must– Low NPSHA: reduce speed to gain NPSHR– High Temperatures: review bearings/seals

• Applications to Avoid:– Low viscosity/Lubricity: <30SSU– Vertical Lift Applications: not self-primer– Solids handling– Shear sensitive liquids– Corrosive liquids

Market

• GI Applications– Fluid circulation– Supply to burner and heater sets– Slop oil and waster transfer

• OEM Applications– Lube and seal oil supply– Filtering and metering systems– Proprietary equipment systems

• Oil Applications– Asphalt transfer– Heavy oil/grease transfer– Barge, train, tank, truck loading

• Chemical Applications– Highly viscous polymers– Cellulose acetate– Feedstocks

$200M+ market in North America annuallyOverwhelmingly distributor-driven

GAX/GR Selection Process• Information Required:

– Viscosity (max and min)– Flow rate desired– Differential pressure desired (or max acceptable by system)– NPSH available

• Steps:1. Gear Pumps notsupported by Affinity.2. GAX and GR SelectionTools available on PumpNet(Distributor Portal)

GAX/GR Selection Tool

Gearex Pumps

• Flowserve to 800 gpm• Pressure up to 350 psi• Temps up to 850 deg F (450 deg C)• Viscosity 32 to 1 M SSU• Max Speed 1800rpm

• Pump Nomenclature B, C, D, E – Each model has several rotor width options

• Max Displacement – B 74 usgpm @ 1800 rpm (Comparable with 2GR)– C 163 usgpm @ 1800 rpm (Comparable with 2.5GR)– D 254 usgpm @ 1200rpm (Between 3GR & 4GR)– E 812 usgpm @ 900 rpm (Between 5GR & 6 GR)

Gearex Pumps

Gearex Pumps

Clean Product Lubrication Product Continuous Flow of

Product No Solids Non-Corrosive

Not so Clean Product Non Lubrication Product Intermittent Flow of

Product Solids Corrosive

Gearex Pumps

Markets• Oil, Chemical, & Petrochemical

Refining• Marine Vessels & Storage Terminals • Power Generation• Non-sanitary Food Industry • OEM Application• General Fluid Transfer Applications.

QUESTIONS?COMMENTS?