Skip to main content
Featured Image for LP122A-5100

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
Flow35.4 GPM134.7 L/min
Maximum Discharge Pressure1300 PSI90 bar
Crankshaft Speed800 RPM
Power56.3 HP42 KW
Max Temperature140 °F60 °C
Inlet Port Size(2) 1-1/2" NPT
Discharge Port Size(2) 1" NPT
Plunger Diameter1.65 in.42 mm
Stroke1.65 in.42 mm
Maximum Inlet Pressure90 PSI6.2 bar
Crankshaft Diameter35 mm
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity US116 fl. oz. 3.43 L
Weight126 lbs.57 kg
Manifold Material 316 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 #09477
35A 07740 O-Ring 3
36 13415 V-sleeve, Weep 3
40 07745 V-Sleeve 6
Valve Assembly Kit – Part #09136-0100
46A 07751-0100 Valve Assembly 6
48A 12055 O-Ring 6
Oil Seal Kit – Part #09577
31 07133 Radial Shaft Seal 3

Horsepower Specifications

RPM GPM 600 PSI 1000 PSI 1300 PSI 2000 PSI
500 9.6 12.7 15.9 20.7 31.9
555 10.6 14.1 17.6 22.9 35.3
640 12.2 16.3 20.4 26.5 40.7
695 13.2 17.7 22.1 28.7 44.1
750 14.3 19.1 23.9 31.0 47.7
800 15.3 20.3 25.4 33.1 50.9
885* 16.9 22.5 28.1 36.6 56.3


*Intermittent duty only

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • LP122A-5100 Exploded View
  • LP122A-5100 Parts List


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • LP122A-5100 Installation Instructions
  • LP122A-5100 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.

Learn More

Join Our Newsletter

Get the latest updates from Giant Pumps delivered right to your inbox!

Subscribe to the Giant Newsletter

Back to Top