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A German-made reciprocating triplex plunger pump.

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
Flow84.5 GPM320 L/min
Maximum Discharge Pressure1450 PSI100 bar
Crankshaft Speed700 RPM
Power90.5 HP67.5 KW
Max Temperature140 °F60 °C
Inlet Port Size(2) 1-1/4" NPT
Discharge Port Size(2) 3/4" NPT
Plunger Diameter2.48 in.63 mm
Stroke2.05 in.52 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
Weight375 lbs.170 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 #09610
39 05235 O-Ring, Seal Retainer 3
42 05238 O-Ring 3
44 05240 V-Sleeve 9
47A 06667 O-Ring 6
Oil Seal Kit – Part #09612
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3
Valve Assembly Kit – Part #09611
51A 05246 Valve Seat 1
51B 07653 O-Ring, Valve Seat 1
51C 05247 Inlet Valve Seat 1
51D 07732-0100 Valve Spring 1
51F 05248 Valve Spring Guide 1
52A 7658 O-Ring 2

Horsepower Specifications

RPM GPM 500 PSI 750 PSI 1000 PSI 1500 PSI
300 36.0 12.9 19.3 25.7 38.6
400 49.0 17.5 26.3 35.0 52.5
500 60.0 21.4 32.1 42.9 64.3
700 84.5 30.2 45.3 60.4 90.5

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP7170-4000 Exploded View
  • GP7170-4000 Parts List


Documents open in new window/tab.

  • Pump Assembly Instructions
  • Giant Industries Limited Warranty
  • GP7170-4000 Installation Instructions
  • GP7170-4000 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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