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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 machined stainless steel 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
Flow28.3 GPM107 L/min
Maximum Discharge Pressure3625 PSI250 bar
Crankshaft Speed700 RPM
Power73.3 HP54.7 KW
Max Temperature140 °F60 °C
Inlet Port Size(2) 1-1/4" NPT
Discharge Port Size(2) 3/4" NPT
Plunger Diameter1.4 in.36 mm
Stroke1.4 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 Capacity1.6 gal 6.0 L
Weight374 lbs.170 kg
Volumetric Efficiency94%
Mechanical Efficiency83%
NPSHR83% Ft.-head

Horsepower Specifications

RPM GPM 1000 PSI 1400 PSI 2000 PSI 2500 PSI 3625 PSI
300 11.3 8.1 11.3 16.1 20.2 29.3
400 15.0 10.7 15.0 21.4 26.8 38.8
550 20.8 14.9 20.8 29.7 37.1 53.9
600 22.6 16.1 22.6 32.3 40.4 58.5
650 25.0 17.9 25.0 35.7 44.6 64.7
700 26.4 18.9 26.4 37.7 47.1 68.4
750 28.3 20.2 28.3 40.4 50.5 73.3

Specification Images

Additional Drawings

  • GP7136 Exploded View
  • GP7136 Parts List
  • GP7136 Torque Specifications


  • Giant Industries Limited Warranty
  • GP7136 Installation Instructions
  • GP7136 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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