LP400

A German-made reciprocating triplex plunger pump.

Features:
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.

  • LP400 Exploded View
  • LP400 Parts List
  • LP450 Torque Specifications
  • Giant Industries Limited Warranty
  • LP400 Installation Instructions
  • LP400 Repair Instructions
  • Troubleshooting Guide

SPECIFICATIONS

U.S. Metric
Flow 15.1 GPM 57.2 L/min
Maximum Pressure 3600 PSI 250 bar
Crankshaft Speed 1000 RPM
Inlet Pressure 90 PSI 6.2 bar
Max Temp @ 500 RPM 160 °F 70 °C
Max Temp @ 1000 RPM 140 °F 60 °C
Plunger Diameter 0.94″ 24 mm
Stroke 1.65″ 42 mm
Crankshaft Diameter 35 mm
Crankshaft Rotation Top of Pulley Towards Manifold
Crankshaft Mounting Either Side
Inlet Ports 1-1/4″ BSP
Discharge Ports 1″ BSP
Crankcase Oil Capacity 100 fl. oz. 3.25 L
Weight 110 lbs. 49.9 kg
Key Component Material
Manifold Aluminum Bronze
Plungers Solid Ceramic Oxide
Valves Stainless Steel
Seals Nitrile With Fabric Reinforcing
Gear End Spheroidal Cast Iron

Click the image to enlarge


HORSEPOWER SPECIFICATIONS

RPM GPM 2000 PSI 2500 PSI 3000 PSI 3600 PSI
500 7.5 10.5 13.1 15.7 19.6
640 9.6 13.4 16.7 20.1 24.1
750 11.3 15.7 19.5 23.5 28.2
805 12.1 16.8 22.6 25.3 30.3
865 13.0 18.1 24.6 27.1 32.6
940 14.2 19.7 26.1 29.5 35.4
1000 15.1 20.9 25.7 31.4 37.6

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
as HP = (GPM X PSI)/1100


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


REPAIR KITS

ITEM# PART# DESCRIPTION Qty.
Plunger Packing Kit – Part #09548
38 07140 O-Ring 3
38A 12055 O-Ring 3
40 06083 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

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.

PUMP CATEGORIES:
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.