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A German-made reciprocating triplex plunger pump.

Aluminum 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 forged brass manifold.

Gearbox and bell housings (to connect to gasoline, diesel, electric or hydraulic drive) and pulsator valve.

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
Flow7.5 GPM28.3 L/min
Maximum Discharge Pressure1900 PSI130 bar
Crankshaft Speed1450 RPM
Power9.8 HP7.3 KW
Crankshaft Speed (High)9 RPM
Intermittent Flow9 GPM32.8 L/min
Intermittent Discharge Pressure1000 PSI70 bar
Intermittent Crankshaft Speed1750 RPM
Intermittent Power Consumption6.2 HP4.6 HP
Max Temperature140 °F60 °C
Inlet Port Size(2) 1/2" BSP, (1) 3/4" BSP
Discharge Port Size(2) 1/2" BSP
Plunger Diameter0.87 in.22 mm
Stroke0.87 in.18.1 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter0.94 in.24 mm
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity12.5 fl. oz. 0.37 L
Weight19.4 lbs.8.8 kg
Volumetric Efficiency0.95
Mechanical Efficiency0.8
NPSHR0.8 Ft.-head

Horsepower Specifications

RPM GPM 500 PSI 1000 PSI 1500 PSI 1900 PSI
910 4.7 1.6 3.2 4.8 6.1
1025 5.3 1.8 3.6 5.4 6.9
1190 6.1 2.1 4.2 6.3 7.9
1305 7.0 2.4 4.8 7.2 9.1
1450 7.5 2.6 5.1 7.7 9.8
1750* 9.0 3.1 6.2

*Intermittent duty only!

Specification Images

Additional Drawings

  • P59 Exploded View
  • P59 Parts List
  • P59 Torque Specifications


  • Giant Industries Limited Warranty
  • P59 Installation Instructions
  • P59 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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