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A German-made reciprocating triplex plunger pump. Features: spheroidal cast iron 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 stainless steel 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
Flow54.4 GPM208.8 L/min
Maximum Discharge Pressure1900 PSI131 bar
Crankshaft Speed700 RPM
Power74.0 HP55.2 KW
Max Temperature140 °F60 °C
Inlet Port Size(2) 2-1/2" NPT
Discharge Port Size(2) 1-1/4" NPT
Plunger Diameter1.97 in.50 mm
Stroke1.89 in.48 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter48 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.55 in.14 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity US1.6 gal 6.0 L
Weight455 lbs.206 kg
Manifold Material Stainless Steel
Crankcase Material Spheroidal Cast Iron
Plunger Material Solid Ceramic Oxide
Valve Material 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 #09526
38A 13156 O-Ring 3
38B 06258 O-Ring 3
38C 07635 Support Ring 3
39A 07796 Grooved Seal 3
42 07638 V-Sleeve 6
Valve Assembly Kit – Part #09614
51B 08282 Valve Spring Guide 1
51C 07732-0100 Valve Spring 1
51D 13164 Valve Plate 1
51E 08283 Valve Seat 1
51F/56D 07653 O-Ring 2
51G/56C 13166 Support Ring 2
51H 07266 O-Ring 1
56A 07658 O-Ring 2
56B 07635 Support Ring 2
Oil Seal Kit – Part #09221
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3

Horsepower Specifications

RPM GPM 800 PSI 1000 PSI 1300 PSI 1500 PSI 1900 PSI
300 23.4 13.4 16.7 21.7 25.1 31.8
400 31.2 17.8 22.3 29.0 33.4 42.3
500 38.9 22.2 27.8 36.1 41.7 52.8
600 46.7 26.7 33.4 43.4 50.0 63.4
700 54.5 31.1 38.9 50.6 58.4 74.0

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  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP7150-4000 Torque Specifications


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  • Giant Industries Limited Warranty

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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