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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 nickel-plated spheroidal cast iron 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
Flow35.4 GPM134 L/min
Maximum Discharge Pressure1450 PSI100 bar
Crankshaft Speed1450 RPM
Power35.3 HP26.3 KW
Max Temperature104 °F40 °C
Inlet Port Size(2) 1-1/2" BSP
Discharge Port Size(2) 1" BSP
Plunger Diameter1.57 in.40 mm
Stroke1.02 in.26 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter30 mm
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity US54.1 fl. oz. 1.6 L
Weight84.9 lbs.38.5 kg
NPSHR26.9 Ft.-head8.2 mWs
Manifold Material Nickel Plated Spheroidal Cast Iron
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 #09776
21 06560 O-Ring 3
22 05308 Sleeve 6
23 04430 Grooved Seal 3
23A 04431 Scraper 3
Inlet Valve Assembly Kit – Part #09777
33 12055 O-Ring 3
46 04437 Inlet Valve Assembly 3
Discharge Valve Assembly Kit – Part #09778
33 12055 O-Ring 3
47 04438 Discharge Valve Assembly 3
Oil Seal Kit – Part #09755
19 07624 Radial Shaft Seal 3

Horsepower Specifications

RPM GPM 500 PSI 750 PSI 1000 PSI 1250 PSI 1450 PSI
725 17.7 6.1 9.2 12.2 15.3 17.7
800 19.5 6.7 10.1 13.5 16.8 19.5
900 22.0 7.6 11.4 15.2 19.0 22.0
1000 24.4 8.4 12.6 16.8 21.0 24.4
1200 29.3 10.1 15.2 20.2 25.3 29.3
1450 35.4 12.2 18.3 24.4 30.5 35.4

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • P541 Exploded View
  • P541 Parts List
  • P541 Torque Specifications


Documents open in new window/tab.

  • Pump Assembly Instructions
  • Giant Industries Limited Warranty
  • P541 Installation Instructions
  • P541 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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