A German-made reciprocating triplex plunger pump.

Features :
Attached gearbox; spheroidal cast iron crankcase with 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.

  • GP7545GB Exploded View
  • GP7545GB Parts List
  • Giant Industries Limited Warranty
  • GP7545GB Installation Instructions
  • GP7545GB Repair Instructions
  • Troubleshooting Guide


U.S. Metric
900 RPM
Max Flow (Continuous) 56.0 GPM 210 L/min
Max Discharge Pressure (Continuous) 2900 PSI 200 bar
Inlet Pressure 90 PSI 6 bar
Plunger Diameter 1.77″ 45 mm
Stroke 2.05″ 52 mm
Max Temp @ 1000 RPM 140 °F 40 °C
Crankshaft Diameter 1.38″ 35 mm
Crankcase Capacity 2.1 gal 8.0 L
Weight 470 lbs. 213 kg
Inlet Ports (2) 2-1/4″ NPT
Discharge Ports (2) 1-1/4″ NPT
Shaft Rotation Pinion Shaft Towards Back of Pump
Shaft Mounting Either Side
Key Components
Manifold Nickel-Plated Spheroidal Cast Iron
Plungers Solid Ceramic Oxide
Valves Duplex Stainless Steel
Seal 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

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 #09603
38A 13156 O-Ring 3
38B 07721 O-Ring 3
39A 07723 Grooved Ring 3
42 07711 V-Sleeve 9
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 Assy 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
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.