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A German-made reciprocating triplex plunger pump.

Spheroidal cast iron crankcase with sight glass and 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.  Comes equipped with an integrated oil cooling system.

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
Flow69.7 GPM264 L/min
Maximum Discharge Pressure2540 PSI175 bar
Crankshaft Speed800 RPM
Power122.1 HP91.1 KW
Max Temperature86 °F30 °C
Inlet Port Size(2) 2-1/4" NPT
Discharge Port Size(2) 1-1/4" NPT
Plunger Diameter1.97 in.50 mm
Stroke1.97 in.58 mm
Maximum Inlet Pressure90 PSI6 bar
Crankshaft Diameter35 mm
Crankshaft RotationPinion Shaft Towards Back of Pump
Crankshaft MountingEither Side
Crankcase Oil Capacity2.1 gal 8.0 L
Weight469 lbs.213 kg

Horsepower Specifications

RPM GPM 1000 PSI 1500 PSI 2000 PSI 2540 PSI
400 34.9 24.1 36.1 48.1 61.1
500 43.6 30.1 45.1 60.1 76.4
600 52.3 36.1 54.1 72.1 91.6
700 61.0 42.1 63.1 84.1 106.9
800 69.7 48.1 72.1 96.1 122.1

Specification Images

Additional Drawings

  • GP7650GB Exploded View
  • GP7650GB Parts List


  • Giant Industries Limited Warranty
  • GP7650GB Installation Instructions
  • GP7650GB 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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