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Consult the factory for special requirements that must be met if the pump is to
operate beyond one or more of the limits specified above.
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
Horsepower ratings shown are the power require-
ments for the pump. Gas engine power outputs must
be approximately twice the pump power require-
ments shown above.
We recommend that a 1.1 service factor be specified
when selecting an electric motor as the power source.
To compute specific pump horsepower requirements,
use the following formula:
(GPH X PSI) / 1450 = HP
* Intermittent Duty Only!
3
U.S. ...............................(Metric)
Volume (Continuous).............................................................. 47.5 GPM .....................(180 LPM)
Volume (Intermittent) ............................................................. 60 GPM* ......................(227 LPM)*
Discharge Pressure ................................................................. 3000 PSI .......................(207 bar)*
Speed (Continuous) ........................................................................................................750 RPM
Speed (Intermittent) ........................................................................................................947 RPM
Inlet Pressure (maximum) ...................................................... 145 PSI .........................(10 bar)
Plunger Diameter .................................................................... 1.77” .............................45mm
Plunger Stroke ........................................................................ 2.0” ...............................52mm
Crankshaft Diameter............................................................... 1.9” ...............................48mm
Key Width............................................................................... 0.6” ...............................14mm
Crankshaft Mounting ......................................................................................................Either side
Shaft Rotation .................................................................................................................See Instructions on page 2
Temperature of Pumped Fluids .............................................. Up to 140
o
F..................(60
o
C)
Inlet Ports........................................................................................................................(2) 2-1/2" NPT
Discharge Ports...............................................................................................................(2) 1-1/4" NPT
Weight..................................................................................... 455 lbs. .........................(206 kg)
Crankcase Oil Capacity .......................................................... 1.6 Gal. .........................(6.0 liter)
Fluid End Material..........................................................................................................Spheroidical Cast Iron
Specifications
Model GP7145GB -2.4
Input RPM
RPM GPM 800 PSI 1000 PSI 1500 PSI 2000 PSI 3000 PSI*
720 300 19.0 10.9 13.6 20.4 27.1 40.7
960 400 25.3 14.5 18.1 27.1 36.2 54.3
1200 500 31.7 18.1 22.6 33.9 45.2 67.9
1440 600 38.0 21.7 27.1 40.7 54.3 81.4
1800 750 47.5 27.1 33.9 50.9 67.9 101.8
1894 789 50.0 28.6 35.7 53.6 71.4 107.1
2273 947 60.0 34.3 42.9 64.3 85.7 128.6
GP7145GB-2.4 PULLEY SELECTION & HORSEPOWER
REQUIREMENTS