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 machined 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 www.P65Warnings.ca.gov

  • LP470 Exploded View
  • LP470 Parts List
  • LP470 Torque Specifications
  • Giant Industries Limited Warranty
  • LP470 Installation Instructions
  • LP470 Repair Instructions
  • Troubleshooting Guide


U.S. Metric
Maximum Flow 12.2 GPM 46.0 L/min
Maximum Discharge Pressure 4640 PSI 320 bar
Crankshaft Speed 1000 RPM
Maximum Inlet Pressure 145 PSI 10 bar
Maximum Temperature 140 °F 60 °C
Plunger Diameter 0.87″ 22 mm
Stroke 1.65″ 42 mm
Crankshaft Diameter 35 mm
Crankshaft Rotation Top of Pulley Towards Manifold
Crankshaft Mounting Either Side
Inlet Ports (2) 1-1/4″ BSP
Discharge Ports (2) 1″ BSP
Crankcase Oil Capacity 118 fl. oz. 3.5 L
Weight 110 lbs. 50 kg
Key Component Material
Manifold Stainless Steel
Plungers Solid Ceramic Oxide
Valves Duplex Steel
Seals Nitrile With Fabric Reinforcing
Gear End Spheroidal Cast Iron


Click the image to enlarge


RPM GPM 1500 PSI 2500 PSI 3500 PSI 4640 PSI
300 3.7 3.8 6.3 8.8 11.7
500 6.1 6.3 10.5 14.7 19.5
700 8.5 8.8 14.7 20.6 27.3
900 11.0 11.4 18.9 26.5 35.1
1000 12.2 12.6 21.0 29.4 39.0


Horsepower Requirements

The ratings shown are the power requirements for the pump. Gas engine power outputs must be approximately twice the pump power requirements shown above.

We recommend a 1.15 service factor be specified when selecting an electric motor as the power source. To compute specific pump horsepower requirements use the following formulas:
Electric HP = (GPM X PSI)/1450
Gas HP = (GPM X PSI)/1100

*Engine power varies based on horizontal or vertical orientation, as well as by makes and models from each manufacturer.


Plunger Packing Kit – Part #09741
38 07140 O-Ring 3
38A 12055 O-Ring 3
39 04128 Pressure Ring 3
40 04129 Sleeve, Front 3
Valve Assembly Kit – Part #09742
44A 07150 O-ring 9
44B 06266 Support Ring 3
46A 07064 Valve Seat 6
46B 13130 Valve Plate 6
46C 07750-0100 Valve Spring 6
46D 07066 Spacer Pipe 6
Oil Seal Kit – Part #09577
31 07133 Oil Seal 3


Repair Kits Available

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.

Service & Repair

Giant provides service on each pump and accessory that we sell. Many basic repair procedures are covered in the Giant repair manual. For all other questions on service or repair needs please contact your local Giant distributor.