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 machined stainless steel 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

  • GP7636GB-2.0 Exploded View
  • GP7636GB-2.0 Parts List

Sorry, there are no accessories associated with this product.

  • Giant Industries Limited Warranty
  • GP7636GB-2.0 Installation Instructions
  • GP7636GB-2.0 Repair Instructions
  • Troubleshooting Guide


U.S. Metric
Max Flow (Intermittent) 40 GPM 151 L/min
Max Discharge Pressure (Intermittent) 3800 PSI 262 bar
Max Speed (Intermittent) 890 RPM
Inlet Pressure 145 PSI 10 bar
Plunger Diameter 1.4″ 36 mm
Stroke 2.28″ 58 mm
Max Temp @ 1000 RPM 140 °F 60 °C
Crankshaft Bore
Crankcase Capacity 2.1 gal 8.0 L
Weight 476 lbs. 216 kg
Inlet Ports (2) 1-1/4″ NPT
Discharge Ports (2) 3/4″ NPT
Shaft Rotation Top of Pulley Towards Manifold
Key Component Material
Manifold Stainless Steel
Plunger Solid Ceramic Oxide
Valve Stainless Steel
Seal Nitrile with Fabric Reinforcing
Gear End 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 #09544
38A 13141 O-Ring, Seal Case 6
38B 13142 Support Ring 6
39A 13291 Grooved Ring 3
42 06796 V-Sleeve 6
Valve Assembly Kit – Part #09520
51A 12056 Support Ring 6
51B 07354 O-Ring 6
51C 13131 Inlet Valve Seat 3
51D 13130 Valve Plate 6
51E 07062-0100 Valve Spring 6
52C 13149 Discharge Valve Seat 3
58A 07700 O-Ring 3
58B 07693 Support Ring 3
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.