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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 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

Specification US Metric
Flow40 GPM151 L/min
Maximum Discharge Pressure3800 PSI262 bar
Crankshaft Speed890 RPM
Max Temperature140 °F60 °C
Inlet Port Size(2) 1-1/4" NPT
Discharge Port Size(2) 3/4" NPT
Plunger Diameter1.4 in.36 mm
Stroke2.28 in.58 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft BoreSAE-C Spline 14T 12/24 DP
Crankshaft RotationTowards Back of the Pump
Crankshaft MountingEither Side
Crankcase Oil Capacity US2.1 gal 8.0 L
Weight476 lbs.216 kg
Manifold Material Stainless Steel
Crankcase Material 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 #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

Horsepower Specifications

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


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

Sample Pump

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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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