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A German-made reciprocating triplex plunger pump.

Attached gearbox; spheroidal cast iron crankcase with vented dipstick; forged, through-hardened, ground and polished crankshaft; bronze connecting rods; hardened stainless steel plunger bases; solid ceramic plungers; nitrile seals with fabric reinforcing; stainless steel valves and nickel-plated Spheroidal cast iron manifold.

WARNING: This product might contain a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to

Specification US Metric
Flow47.5 GPM180 L/min
Maximum Discharge Pressure2000 PSI140 bar
Crankshaft Speed750 RPM
Power65.5 HP48.8 KW
Crankshaft Speed (High)60 RPM
Intermittent Flow60 GPM227 L/min
Intermittent Discharge Pressure3000 PSI200 bar
Intermittent Crankshaft Speed947 RPM
Intermittent Power Consumption124.1 HP92.5 HP
Max Temperature140 °F60 °C
Inlet Port Size(2) 2-1/2" NPT
Discharge Port Size(2) 1-1/4" NPT
Plunger Diameter1.77 in.45 mm
Stroke2.05 in.52 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter48 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.55 in.14 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity1.7 gal 6.3 L
Weight418 lbs.190 kg
Manifold Material Nickel-Plated Cast Iron
Crankcase Material Spheroidal Cast Iron
Plunger Material Solid Ceramic Oxide
Valve Material Stainless Steel
Seal Material Nitrile with Fabric Reinforcing
The repair kits listed to the right are available for this pump. If you need further information about these repair kits, or have questions about other specific parts for your pump, please contact you local Giant distributor or contact Giant customer service.
Plunger Packing Kit – Part #09603
38A 13156 O-Ring 3
38B 06258 O-Ring 3
39A 13290 Grooved Ring 3
41 13296 Support Ring 3
42 13294 V-Sleeve 9
Valve Repair Kit – Part # 09661
51B 07732-0100 Valve Spring 1
51C 05314 Valve Plate 1
51D 05136A Valve Seat 1
51E/56D 07653 O-Ring 2
51F/56C 13166 Support Ring 2
56A 07658 O-Ring 2
56B 07635 Support Ring 2
Oil Seal Kit – Part #09221
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3

Horsepower Specifications

RPM GPM 800 PSI 1000 PSI 1500 PSI 2000 PSI 3000 PSI*
300 19.0 10.5 13.1 19.7 26.2 39.3*
400 25.3 14.0 17.4 26.2 34.9 52.3*
500 31.7 17.5 21.9 32.8 43.7 65.6*
600 38.0 21.0 26.2 39.3 52.4 78.6*
750 47.5 26.2 32.8 49.1 65.5 98.3*
789 50.0 27.6 34.5 51.7 69.0 103.4*
947* 60.0* 33.1* 41.4* 62.1* 82.8* 124.1*

*Intermittent Duty Only

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP7145GB Exlpoded View
  • GP7145GB Parts List


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • GP7145GB Installation Instructions
  • GP7145GB Repair Instructions
  • Troubleshooting Guide

Sample Pump

Our Company

For 50 years, Giant Pumps has offered the most dependable positive displacement high-pressure triplex pumps available. Designed and built to the highest quality standards, customers count on Giant Pumps products to keep their equipment running. Every design detail of Giant Pumps products is optimized for long-life and reliable performance, making Giant Pumps the most trusted name in high-pressure pumps and systems.

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