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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; viton seals; stainless steel valves and forged brass manifold.

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

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
Flow6.1 GPM23.1 L/min
Maximum Discharge Pressure1900 PSI130 bar
Crankshaft Speed1420 RPM
Power7.9 HP5.9 KW
Crankshaft Speed (High)7.5 RPM
Intermittent Flow7.5 GPM28 L/min
Intermittent Discharge Pressure1000 PSI69 bar
Intermittent Crankshaft Speed1750 RPM
Intermittent Power Consumption5.1 HP3.8 HP
Max Temperature160 °F70 °C
Inlet Port Size(2) 1/2" NPT
Discharge Port Size(2) 3/8" NPT
Plunger Diameter0.79 in.20 mm
Stroke0.79 in.18.1 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter24 mm
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity12.5 fl. oz. 0.37 L
Weight17.2 lbs.7.8 kg
Volumetric Efficiency0.94
NPSHR7.4 mWs

Horsepower Specifications

RPM GPM 500 PSI 1000 PSI 1500 PSI 1885 PSI
851 3.7 1.3 2.5 3.8 4.8
967 4.2 1.4 2.9 4.3 5.5
1084 4.7 1.6 3.2 4.8 6.1
1201 5.2 1.8 3.6 5.3 6.8
1317 5.7 2.0 3.9 5.9 7.4
1420 6.1 2.1 4.2 6.3 7.9
1750* 7.5 2.6 5.1

*Intermittent duty only!

Specification Images

Additional Drawings

  • P56W-0011 Exploded View
  • P56W-0011 Parts List
  • P56W-0011 Torque Specifications


  • Giant Industries Limited Warranty
  • P56W-0011 Installation Instructions
  • P56W-0011 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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