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Specifications
Model LP255
U.S. .....................................(Metric)
Volume ................................................................. 26.0 GPM ............................(98 l/min)
Discharge Pressure .............................................2175 PSI .............................. 150 Bar)
Inlet Pressure ....................................................... Up to 90 PSI .......................Up to 6.2 Bar)
Speed .................................................................................................................Up to 1000 RPM
Plunger Diameter .................................................1.26” ....................................(32 mm)
Stroke ................................................................... 1.65” ....................................(42 mm)
Crankcase Oil Capacity ....................................... 116 fl.oz. ..............................(3.43 liters)
Temperature of Pumped Fluids............................ Up to 160
o
F .........................(70
o
C)
Inlet Ports ..........................................................................................................2 x 1-1/2" NPT
Discharge Ports .................................................................................................2 x 1" NPT
Crankshaft Mounting .........................................................................................Either Side
Shaft Rotation ...................................................... Top of Pulley Towards Fluid End
Weight .................................................................. 116 lbs. ................................(52.7 Kg)
Crankshaft Diameter ........................................... 1.38” ....................................(35 mm)
Valve Casing ......................................................................................................Brass
Volumetric Efficiency @ 800 RPM ...................................................................0.96
Mechanical Efficiency @ 800 RPM .................................................................0.85
PULLEY INFORMATION
Pulley selection and pump speed are based on a 1725
RPM motor and "B" section belts. When selecting
desired GPM, allow for a ±5% tolerance on pumps
output due to variations in pulleys, belts and motors
among manufacturers.
1. Select GPM required, then select appropriate
motor and pump pulley from the same line.
2. The desired pressure is achieved by selecting the
correct nozzle size that corresponds with the
pump GPM.
HORSEPOWER INFORMATION
We recommend that a 1.1 service factor be speci-
fied when s electing an electric motor as the power
source. To compute specific pump horsepower
requirements, use the following formula:
HP = (GPM X PSI) / 1440
LP255 PULLEY SELECTION AND HORSEPOWER REQUIREMENTS
PUMP
PULLEY
MOTOR
PULLEY
RPM GPM 1000 PSI 1500 PSI 2000 PSI 2175 PSI
12.75" 3.95" 500 13 9.0 13.5 18.1 19.6
12.75" 4.35" 640 16.6 11.5 17.3 23.1 25.1
12.75" 4.95" 750 19.5 13.5 20.3 27.1 29.5
12.75" 5.35" 805 20.9 14.5 21.8 29.0 31.6
12.75" 5.75" 865 22.5 15.6 23.4 31.3 34.0
12.75" 6.15" 920 23.9 16.6 24.9 33.2 36.1
12.75" 6.50" 1000 26 18.1 27.1 36.1 39.3