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A German-made reciprocating triplex plunger pump for high temperature applications.

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; high temperature nitrile seals (with fabric reinforcing); stainless steel valves and forged brass 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
Flow6.2 GPM
Maximum Discharge Pressure870 PSI60 bar
Crankshaft Speed750 RPM
Power1.9 HP1.4 KW
Crankshaft Speed (High)3.9 RPM
Intermittent Flow3.9 GPM14.7 L/min
Intermittent Discharge Pressure870 PSI62 bar
Intermittent Crankshaft Speed900 RPM
Intermittent Power Consumption2.3 HP1.7 kW
Max Temperature195 °F90 °C
Inlet Port Size(2) 1/2" NPT
Discharge Port Size(2) 3/8" NPT
Plunger Diameter0.79 in.20 mm
Stroke0.71 in.18.1 mm
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity US12.5 fl. oz. 0.37 L
Weight17.2 lbs.7.8 kg
Manifold Material Special Brass
Crankcase Material Aluminum
Plunger Material Solid Ceramic Oxide
Valve Material High Grade 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 #09457
31 13355 V-Sleeve 3
31A 06537 High Temperature Seal 3
40 07212 O-Ring, Adapter 3
42 07214 O-Ring, Inlet Plug 3
44 07035 O-Ring, Discharge Plug 3
49 07218 O-Ring 1
50 08358 Grooved Seal Ring 3
51 06240 Support Ring 3
Valve Assembly Kit – Part #09458
34 05593 Retainer, Valve Spring 6
35 06017-0100 Valve Spring, SS 6
36 06016 Valve Plate 6
37 06014 Valve Seat 6
38 06015 O-Ring, Valve Seat 6
Oil Seal Kit – Part #09202
26 07206 Crankcase Oil Seal 3

Horsepower Specifications

RPM GPM 500 PSI 700 PSI 870 PSI
400 1.7 0.6 0.8 1.0
500 2.2 0.8 1.1 1.3
600 2.6 0.9 1.3 1.6
800 3.5 1.2 1.7 2.1
900 3.9 1.3 1.9 2.3

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • P56HT Exploded VIew
  • P56HT Parts List
  • P56HT Torque Specifications


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • P56HT Installation Instructions
  • P56HT Repair Instructions
  • Troubleshooting Guide

Sample Pump

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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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