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Specifications
Models LP122A/LP122A-4000/LP123
*Pump speeds of 640 RPM and above require a minimum inlet pressure of 12 psig.
**Pump speeds of 805 RPM and above require a minimum inlet pressure of 14 psig.
U.S. .....................................(Metric)
Volume (Continuous) ........................................... 35.4 GPM ............................(134 l/m)
Volume (Intermittent) ........................................... 40 GPM ...............................(151.4 l/m)
Discharge Pressure (Continuous) ........................ 1300 PSI ..............................(90 Bar)
Discharge Pressure (Intermittent) ....................... 2000 PSI ..............................(138 Bar)
Inlet Pressure ....................................................... Up to 90 PSI .......................(Up to 6.2 Bar)
Speed (Continuous) ............................................................................................Up to 800 RPM*
Speed (Intermittent) ...........................................................................................Up to 885 RPM**
Plunger Diameter .................................................1.65” ....................................(42 mm)
Stroke ................................................................... 1.65” ....................................(42 mm)
Crankcase Oil Capacity ....................................... 116 fl.oz. ..............................(3.43 liters)
Temperature of Pumped Fluids............................ Up to 160
o
F .........................(Up to 71
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 - LP122A .....................................................................................Aluminum Bronze
Valve Casing - LP123 ........................................................................................Brass
Valve Casing - LP122A-4000 ............................................................................303 S.S.
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% toler-
ance on pumps output due to variations in
pulleys, belts and motors among manufactur-
ers.
1. Select GPM required, then select
appropriatemotor and pump pulley from the
same line.
*Intermittent duty only! - Consult factory!
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
LP122A/LP122A-4000/LP123 PULLEY SELECTION AND HORSEPOWER
REQUIREMENTS
GPM
PUMP
PULLEY
MOTOR
PULLEY
RPM 600 PSI 800 PSI 1000 PSI 1300 PSI 2000 PSI*
22.3 12.75" 3.95" 500 9.6 12.7 15.9 20.7 31.9
24.7 12.75" 4.35" 555 10.6 14.1 17.6 22.9 35.3
28.5 12.75" 4.95" 640 12.2 16.3 20.4 26.5 40.7
30.9 12.75" 5.35" 695 13.2 17.7 22.1 28.7 44.1
33.4 12.75" 5.75" 750 14.3 19.1 23.9 31.0 47.7
35.6 12.75" 6.15" 800 15.3 20.3 25.4 33.1 50.9
39.4 12.75" 6.50" 885* 16.9 22.5 28.1 36.6 56.3