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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 cast aluminum bronze 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
Flow38.4 GPM145.3 L/min
Maximum Discharge Pressure2610 PSI180 bar
Crankshaft Speed700 RPM
Power69.1 HP51.5 KW
Max Temperature140 °F60 °C
Inlet Port Size(2) 2-1/2" NPT
Discharge Port Size(2) 1-1/4" NPT
Plunger Diameter1.7 in.42 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 Capacity1.6 gal 6.0 L
Weight374 lbs.170 kg
NPSHR8.5 mWs
Manifold Material Aluminum Bronze
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 #09766
38A 13156 O-Ring 3
38B 13141 O-Ring 3
39A 04323 Compact Ring 3
42 07745 V-Sleeve 6
Valve Repair Kit – Part #09765
51B 07732-0100 Valve Spring 6
51C 05314 Valve Plate 6
51D 05136A Valve Seat 6
51E 07653 O-Ring 6
51F 13166 Support Ring 6
56A 07658 O-Ring 6
56B 07635 Support Ring 6
56C 13166 Support Ring 3
56D 07653 O-Ring 3
Oil Seal Kit – Part #09221
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3

Horsepower Specifications

RPM GPM 800 PSI 1000 PSI 1500 PSI 2000 PSI 2610 PSI
300 16.5 9.1 11.4 17.1 22.8 29.7
400 21.9 12.1 15.1 22.7 30.2 39.4
500 27.4 15.1 18.9 28.3 37.8 49.3
600 32.9 18.2 22.7 34.0 45.4 59.2
700 38.4 21.9 27.4 41.1 54.9 69.1

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP7142 Exploded View
  • GP7142 Parts List
  • GP7142 Torque Specifications


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • GP7142 Installation Instructions
  • GP7142 Repair Instructions
  • Troubleshooting Guide

Sample Pump

Our Company

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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