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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 cast aluminum bronze 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
Flow22.6 GPM85.6 L/min
Maximum Discharge Pressure2300 PSI160 bar
Crankshaft Speed1000 RPM
Power36.1 HP26.9 KW
Max Temperature140 °F60 °C
Inlet Port Size(2) 1-1/4" BSP
Discharge Port Size(2) 1" BSP
Plunger Diameter1.18 in.30 mm
Stroke1.65 in.42 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter35 mm
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity95 fl. oz. 3.0 L
Weight110 lbs.50 kg
Manifold Material Aluminum Bronze
Crankcase Material Spheroidal 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 #09546
38 07700 O-Ring 6
40 13016 V-Sleeve 6
Valve Assembly Kit – Part #09196
44A 07150 O-Ring 6
44B 06266 Support Ring 3
46A 07064 Valve Seat 3
46B 07063 Valve Plate 3
46C 07750-0100 Valve Spring 3
Oil Seal Kit – Part #09577
31 07133 Oil Seal 3

Horsepower Specifications

RPM GPM 500 PSI 1000 PSI 2000 PSI 2300 PSI
500 11.3 3.9 7.8 15.7 18.0
640 14.5 5.0 10.0 20.1 23.1
750 16.9 5.9 11.8 23.5 27.1
805 18.2 6.3 12.6 25.3 29.0
865 19.5 6.8 13.6 27.1 31.2
940 21.2 7.4 14.7 29.5 33.9
1000 22.6 7.8 15.7 31.4 36.1

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • LP350 Exploded View
  • LP350 Parts List
  • LP350 Torque Specifications


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • LP350 Installation Instructions
  • LP350 Repair Instructions
  • Troubleshooting Guide

Sample Pump

Our Company

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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