A German-made reciprocating triplex plunger pump.

Spheroidal cast iron crankcase with vented dipstick; forged, through-hardened, ground and polished crankshaft; bronze connecting rods; hardened stainless steel plunger bases; stainless plungers with hardened metal coating; aramid packing; stainless steel valves and machined stainless steel manifold.

  • GP7522 Explodeed View
  • GP7522 Parts List
  • Giant Industries Limited Warranty
  • GP7522 Installation Instructions
  • GP7522 Repair Instructions
  • Troubleshooting Guide


U.S. Metric
750 RPM
Max Flow (Continuous) 9.9 GPM 37.5 L/min
Max Discharge Pressure (Continuous) 10,150 PSI 700 bar
Inlet Pressure 90 PSI 6 bar
Plunger Diameter 0.87″ 22 mm
Stroke 1.89″ 48 mm
Max Temp 140 °F 60 °C
Crankshaft Bore SAE-C Spline 14T 12/24DP
Crankcase Capacity 1.6 gal 6.0 L
Weight 375 lbs. 170 kg
Inlet Ports (2) 1-1/4″ BSP
Discharge Ports (2) 3/4″ BSP
Shaft Rotation Top of Pulley Towards Manifold
Shaft Mounting Either Side
Key Component
Manifold Stainless Steel
Plungers Hard Metal Coating
Valves Duplex Stainless Steel
Seals Aramid
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

as 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 #09701
39A 05523 O-Ring 6
42 06754 Spiral Ring (Packing) 6
43 06755 Support Ring 6
44 06756 Guide Ring 3
46 13390 Seal Ring 3
Valve Assembly Kit – Part #09702
51B 05193 Support Ring 2
51C 05194 Inlet Valve Seat 1
51D 06761 Valve Plate 1
51E 06762 Valve Spring 1
58A 07700 O-Ring 1
52B 07693 Support Ring 1
Discharge Valve Assembly Kit – Part # 09703
52B 05193 O-Ring 1
52C 05195 Valve Seat 1
52D 06761 Valve Plate 1
52E 06762 Valve Spring 1
58A 07700 O-Ring 1
58B 07693 Support Ring 1
Oil Seal Kit – Part #09221
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3

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.