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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.

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
Flow15.7 GPM59.5 L/min
Maximum Discharge Pressure2000 PSI140 bar
Crankshaft Speed1450 RPM
Power13.0 HP9.7 KW
Intermittent Flow18.9 GPM71.7 L/min
Intermittent Discharge Pressure1000 PSI69 bar
Intermittent Crankshaft Speed1750 RPM
Intermittent Power Consumption21.8 HP16.3 kW
Max Temperature160 °F70 °C
Inlet Port Size(1) 1" BSP, (2) 3/4" BSP
Discharge Port Size(2) 3/4" BSP
Plunger Diameter1.18 in.30 mm
Stroke0.79 in.20 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity US27.1 fl. oz. 0.8 L
Weight39.7 lbs.18 kg
NPSHR32.8 Ft.-head10.0 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 #09565
20A 08059 O-Ring 3
21A 07150 O-Ring 6
23 06931 Grooved Seal 6
24 06932 Support Ring 3
25B 02009 O-Ring 2
Valve Assembly Kit – Part #09566
27A 04365 Valve Assembly 6
31 07212 O-Ring 6
33 07214 O-Ring 3
Oil Seal Kit – Part #09306
19 08366 Oil Seal 3

Horsepower Specifications

RPM GPM 500 PSI 750 PSI 1000 PSI 1500 PSI 2000 PSI
1000 10.8 3.7 5.6 7.4 11.2 14.9
1200 13.0 4.5 6.7 9.0 13.4 17.9
1300 14.0 4.8 7.2 9.7 14.5 19.3
1450 15.7 5.4 8.1 10.8 16.2 21.7
1750 18.9 6.5 9.8 13.0 N/A N/A

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • P490 Exploded View
  • P490 Parts List
  • P490 Torque Specifications


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • P490 Installation Instructions
  • P490 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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