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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
Flow36.7 GPM139 L/min
Maximum Discharge Pressure2175 PSI150 bar
Crankshaft Speed800 RPM
Power57.0 HP42.5 KW
Max Temperature140 °F60 °C
Inlet Port Size(2) 2-1/2" BSP
Discharge Port Size(2)1-1/4" BSP
Plunger Diameter1.57 in.40 mm
Stroke1.89 in.48 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter1.78 in.45 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.47 in.12 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity US1.1 gal 4.2 L
Weight30 lbs.140 kg
NPSHR26.9 Ft.-head8.2 mWs
Manifold Material Aluminum Bronze
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 #09867
41A 07721 O-Ring 3
41C 13141 O-Ring 3
44 12559 Sleeve 6
45 12561 Grooved Ring 3
Valve Assembly Kit – Part #09869
51A 12564 Valve Seat 6
51B 03383 Valve Plate 6
51C 03673 Valve Spring 6
51E 03675 Valve Spring Guide 6
52 05166 O-Ring 6
57 05167 O-Ring 3
Oil Seal Kit – Part #09870
32 06118 Radial Shaft Seal 3
33A 07721 O-Ring 3
33B 13217-0100 Circlip 3

Horsepower Specifications

RPM GPM 500 PSI 1000 PSI 1500 PSI 2175 PSI
400 18.4 6.6 13.1 19.7 28.5
500 22.9 8.2 16.4 24.6 35.6
600 27.5 9.8 19.7 29.5 42.8
700 32.1 11.5 22.9 34.4 49.9
800 36.7 13.1 26.2 39.3 57.0

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP6140 Exploded View
  • GP6140 Parts List


Documents open in new window/tab.

  • Pump Assembly Instructions
  • Giant Industries Limited Warranty
  • GP6140 Installation Instructions
  • GP6140 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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