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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 machined 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
Flow4.6 GPM17.5 L/min
Maximum Discharge Pressure7250 PSI500 bar
Crankshaft Speed1750 RPM
Power23.0 HP17.2 KW
Max Temperature104 °F40 °C
Inlet Port Size(2) 1/2" BSP
Discharge Port Size(2) 3/8" BSP
Plunger Diameter0.55 in.14 mm
Stroke0.94 in.24 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter28 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width8 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity US27 fl. oz. 0.8 L
Weight42 lbs.19 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 #09779
21 07266 O-Ring 3
23 06483 Grooved Seal Packing 6
23A 13036 Support Ring 3
24 06484 Guide Ring 3
25A 06492 Support Ring 6
25B 06487 O-Ring 6
Valve Assembly Kit – Part #09781
27A 05543 Valve Assembly, Complete 6
33 05545 O-Ring 3
Oil Seal Kit – Part #09641
19 05444 Oil Seal 3

Horsepower Specifications

RPM GPM 2500 PSI 3500 PSI 5000 PSI 7250 PSI
900 2.4 4.1 5.8 8.3 12.0
1200 3.2 5.5 77 110 160
1450 3.8 6.6 9.2 13.1 19.0
1750 4.6 7.9 11.1 15.9 23.0

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • P462 Exploded View
  • P462 Parts List


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • P462 Installation Instructions
  • P462 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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