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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.

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
Flow26.4 GPM100 L/min
Maximum Discharge Pressure1740 PSI120 bar
Crankshaft Speed1450 RPM
Power31.7 HP23.6 KW
Max Temperature104 °F40 °C
Inlet Port Size(2) 1" BSP
Discharge Port Size(2) 3/4" BSP
Plunger Diameter1.42 in.36 mm
Stroke0.94 in.24 mm
Crankshaft Diameter1.18 in.30 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.32 in.8 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity US68 fl. oz. 2.0 L
Weight93 lbs.42 kg
NPSHR8.5 mWs
Manifold Material Forged 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 #09753
21 08492 O-Ring 3
22 07144 Sleeve 6
23 04248 Grooved Seal 3
23A 04249 Scraper 3
Valve Assembly Kit – Part #09754
33 12057 O-Ring 6
46 04254 Valve Assembly 6
Oil Seal Kit – Part #09755
19 04860 Oil Seal 3

Horsepower Specifications

RPM GPM 1000 PSI 1200 PSI 1500 PSI 1740 PSI
920 16.7 11.5 13.8 17.3 20.0
1050 19.1 13.2 15.8 19.8 22.9
1185 21.6 14.9 17.9 22.4 25.9
1315 23.9 16.5 19.8 24.7 28.7
1450 26.4 18.2 21.9 27.3 31.7

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • P536 Exploded View
  • P536 Parts List
  • P536 Torque Specifications


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • P536 Installation Instructions
  • P536 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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