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 nickel-plated Spheroidal cast iron manifold. Comes equipped with an integrated oil cooling system.

  • GP7650GBHS-2.75 Exploded View
  • GP7650GBHS-2.75 Parts List

Sorry, there are no accessories associated with this product.

  • Giant Industries Limited Warranty
  • GP7650GBHS-2.75 Installation Instructions
  • GP7650GBHS-2.75 Repair Instructions
  • Troubleshooting Guide


U.S. Metric
Flow 70 GPM 264 L/min
Pressure 2540 PSI 175 bar
Speed 800 RPM
Maximum Inlet Pressure 90 PSI 10 bar
Plunger Diameter 1.97″ 50 mm
Stroke 2.28″ 58 mm
Max. Temperature of Pumped Fluids 86 ºF 30 ºC
Inlet Ports (2) 2-1/4″ NPT
Discharge Ports (2) 1-1/4″ NPT
Shaft Rotation Pinion Shaft Towards Back of Pump
Crankshaft Bore SAE-C Spline 14T 12/24 DP
Weight 476 lbs. 216 kg
Crankcase Oil Capacity 2.1 gal 8.0 L
Key Component Material
Manifold Nickel-Plated Spheroidal Cast Iron
Plungers Solid Ceramic Oxide
Valves Duplex Steel/Plastic Retainer
Seals Nitrile With Fabric Reinforcing
Gear End Spheroidal Cast Iron

Click the image to enlarge


Horsepower Requirements

The ratings shown are the power requirements for the pump. Gas engine power outputs must be approximately twice the pump power requirements shown above.

We recommend a 1.15 service factor be specified when selecting an electric motor as the power source. To compute specific pump horsepower requirements use the following formulas:
Electric HP = (GPM X PSI)/1450
Gas HP = (GPM X PSI)/1100

*Engine power varies based on horizontal or vertical orientation, as well as by makes and models from each manufacturer.


Plunger Packing Kit – Part #09526
38A 13156 O-Ring 3
38B 06258 O-Ring 3
38C 07635 Support Ring 3
39A 07796 Grooved Ring 3
41 05318 Support Ring 3
42 07638 V-Sleeve 6
Oil Seal Kit – Part #09221
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3
Inlet Valve Assembly Kit – Part #09659
51 05594 Inlet Valve Assembly 1
56A 07658 O-Ring 1
56B 07635 Support Ring 1
Large Discharge Valve Kit – Part #09660
52 05600 Discharge Valve Assembly 1
55 05647 Valve Spacer 1
56A 07658 O-Ring 1
56B 07635 Support Ring 1
Small Discharge Valve Kit* – Part #09661
51B 05450 Valve Spring 1
51C 05247 Valve Plate 1
51D 05596 O-Ring 1
52F 05599 O-Ring 1
56A 07658 O-Ring 1
56B 07635 Support Ring 1

*The discharge valve seat (item 52E) can be flipped over and used. If it is damaged on both sides order kit #09660.

Repair Kits Available

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.

Service & Repair

Giant provides service on each pump and accessory that we sell. Many basic repair procedures are covered in the Giant repair manual. For all other questions on service or repair needs please contact your local Giant distributor.