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A German-made reciprocating triplex plunger pump for bentonite 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; rope packing; stainless steel valves and spheroidal cast iron 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
Flow171.7 GPM650 L/min
Maximum Discharge Pressure1160 PSI80 bar
Crankshaft Speed530 RPM
Power134.0 HP100 KW
Max Temperature104 °F40 °C
Inlet Port Size(2) 3" BSP
Discharge Port Size(2) 1-1/2" BSP
Plunger Diameter3.3 in.85 mm
Stroke2.83 in.72 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter70 mm
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity US4.6 gal 17.5 L
Weight785 lbs.356 kg
Manifold Material Cast Iron
Crankcase Material Spheroidal Cast Iron
Plunger Material Solid Ceramic Oxide
Valve Material Stainless Steel
Seal Material Rope Packing
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 #09822
38A 05056 O-Ring 6
40 04939 Support Ring 3
41 04940 Guide Ring 6
42 04941 Spiral Ring 6
Valve Assembly Kit – Part #09823
51 04949 Valve Assembly 6
56A 04955 O-Ring 3
56B 04966 O-Ring 3
Oil Seal Kit – Part #09584
32 05058 Radial Shaft Seal 3
33A 05056 O-Ring 3

Horsepower Specifications

RPM GPM 500 PSI 700 PSI 900 PSI 1160 PSI
300 97.2 33.5 46.9 60.3 77.8
400 129.6 44.7 62.6 80.4 103.7
500 162.0 55.9 78.2 100.6 129.6
530 171.7 59.2 82.9 106.6 137.4

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • BP8085 Exploded View
  • BP8085 Parts List
  • BP8085 Torque Specifications


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • BP8085 Installation Instructions
  • BP8085 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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