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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; zirconia oxide ceramic plungers; aramid packing; stainless steel valves; machined stainless steel manifold and piping for cooling the seals.

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
Flow6 GPM22.8 L/min
Maximum Discharge Pressure8700 PSI600 bar
Crankshaft Speed1000 RPM
Power37.3 HP27.8 KW
Max Temperature104 °F40 °C
Inlet Port Size(2) 1/2" BSP
Discharge Port Size(2) 1/2" BSP
Plunger Diameter0.63 in.16 mm
Stroke1.65 in.42 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter1.38 in.35 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.38 in.10 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity US0.92 gal 3.5 L
Weight115 lbs.52 kg
Manifold Material Machined Stainless Steel
Crankcase Material Spheroidal Cast Iron
Plunger Material Zirconia Oxide Ceramic
Valve Material Duplex Steel
Seal Material Aramid 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 #09729
35 07767 Grooved Ring 3
38 04059 Sleeve Support Ring 3
39 05650 Spiral Ring 3
43 06595 Border Seal Ring 3
45 06560 O-Ring 6
47 07740 O-Ring 3
Valve Assembly Kit – Part #09518
48 07750 Valve Spring 3
49 06598 Inlet Valve Plate 3
50 06599 Valve Body 3
51 12092 O-Ring 3
52 06600 Support Ring for O-Ring 3
53 06601 Border Seal Ring 3
55 06603 Spring Guide 3
56 12090 Valve Spring 3
57 06604 Discharge Valve Plate 3
Oil Seal Kit – Part #09577
31 07133 Oil Seal 3


Horsepower Specifications

RPM GPM 3000 PSI 5000 PSI 7000 PSI 8700 PSI
600 3.6 7.7 12.9 18.0 22.4
700 4.2 9.0 15.0 21.0 26.1
800 4.8 10.3 17.1 24.0 29.8
900 5.4 11.6 19.3 27.0 33.6
1000 6.0 12.9 21.4 30.0 37.3


Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • LP900 Exploded View
  • LP900 Parts List
  • LP900 Torque Specifications


Documents open in new window/tab.

  • Pump Assembly Instructions
  • Giant Industries Limited Warranty
  • LP900 Installation Instructions
  • LP900 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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