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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
Flow42.4 GPM160.3 L/min
Maximum Discharge Pressure1160 PSI80 bar
Crankshaft Speed460 RPM
Power34.9 HP26.0 KW
Max Temperature220 °F105 °C
Inlet Port Size(2) 2-1/2" BSP
Discharge Port Size(2) 1-1/4" BSP
Plunger Diameter2.17 in.55 mm
Stroke2.0 in.52 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter1.9 in.48 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.6 in.14 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity US1.8 gal 7.0 L
Weight441 lbs.200 kg
NPSHR19.7 Ft.-head6.0 mWs
Manifold Material AISI 303 Stainless Steel
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 #0
38A 13156-0003 O-Ring 3
38B 07721-0003 O-Ring 3
39B 05717 Compact Ring 3
42 07711-0030 V-Sleeve 9
Valve Assembly Kit – Part #09604A-4000
51B 07732-0100 Valve Spring 6
51C 05314 Valve Plate 6
51D 05136A Valve Seat 6
51E 07653-0003 O-Ring 6
51F 13166 Support Ring 6
56A 07658-0003 O-Ring 3
56B 07635 Support Ring 3
56C 13166 Support Ring 3
56D 07653-0003 O-Ring 3
Oil Seal Kit – Part #09221
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3

Horsepower Specifications

RPM GPM 500 PSI 750 PSI 1000 PSI 1160 PSI
200 18.4 6.3 9.5 12.7 14.7
300 27.7 9.6 14.3 19.1 22.2
400 36.9 12.7 19.1 25.4 29.5
460 42.3 14.6 21.9 29.2 33.8

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP7155-4000HTC Exploded View
  • GP7155-4000HTC Parts List


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • GP7155-4000HTC Installation Instructions
  • GP7155-4000HTC 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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