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A German-made triplex plunger positive displacement pump with reciprocating plungers for belt drive applications.

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 316 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
Flow33.8 GPM127.8 L/min
Maximum Discharge Pressure2320 PSI160 bar
Crankshaft Speed910 RPM
Power56 HP40.8 KW
Max Temperature140 °F60 °C
Inlet Port Size(3) 1-1/2" BSP
Discharge Port Size(2) 1" BSP
Plunger Diameter1.42 in.36 mm
Stroke1.81 in.46 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter35 mm
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity US1.2 gal 4.6 L
Weight179 lbs.81 kg
Manifold Material Stainless Steel
Crankcase Material Spheroidal Cast Iron
Plunger Material Solid Ceramic Oxide
Valve Material High Grade 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 #09597
35A 07303 O-Ring 6
35B 13286 O-Ring 3
36 13291-0020 Grooved Ring 3
37A 07910 O-Ring 6
39 07142-0100 Pressure Ring 3
40 07144 V-Sleeve 6
Inlet Valve Assembly Kit – Part #09231-0100
46A 06577 O-Ring 3
46C 13304-0100 Inlet Valve Seat 3
46D 13306-0100 Valve Plate 3
46E 13307 Valve Spring 3
46F 13308 Spring Tension Cap 3
46G 13309 Spacer Pipe 3
48B 07740 O-Ring 3
Discharge Valve Kit – Part # 09232-0100
47A 13289-0001 O-Ring, Viton 3
47C 13313 Discharge Valve Seat 3
47D 13306-0100 Valve Plate 3
47E 13307 Valve Spring 3
47F 13308 Spring Tension Cap 3
48B 07740 O-Ring 3
Oil Seal Kit – Part #09230
31 13284 Oil Seal 3

Horsepower Specifications

RPM GPM 1000 PSI 1500 PSI 2000 PSI 2320 PSI
700 26.0 17.9 26.9 35.9 41.6
750 27.9 19.2 28.8 38.4 44.6
800 29.7 20.5 30.7 41.0 47.5
850 31.6 21.8 32.7 43.5 50.5
910 33.8 23.3 35.0 46.6 54.1

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP5136-5100 Exploded View
  • GP5136-5100 Parts List
  • GP5136-5100 Torque Specifications


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • GP5136-5100 Installation Instructions
  • GP5136-5100 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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