3
Specifications
Model LP121A-5100
Volume ............................................................................................... Up to 31.7 GPM (120 LPM)
Discharge Pressure ............................................................................ Up to 1740 PSI (120 Bar)
Inlet Pressure ..................................................................................... Up to 90 PSI (6.2 Bar)
Speed ................................................................................................. Up to 1000 RPM
Plunger Diameter ............................................................................... 36 mm
Stroke ................................................................................................. 42 mm
Crankcase Oil Capacity ..................................................................... 116 fl.oz. (3,430 ml)
Temperature of Pumped Fluids ......................................................... Up to 160
o
F (71
o
C)
Inlet Port ............................................................................................ 3 x 1-1/2" BSPP
Discharge Port ................................................................................... 3 x 1 BSPP
Crankshaft Mounting ......................................................................... Either Side
Shaft Rotation .................................................................................... Top of Pulley Towards Fluid End
Weight................................................................................................ 116 lbs. (52.6 kg)
Crankshaft Diameter.......................................................................... 35 mm
Valve Casing ...................................................................................... 316 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% 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 specified
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
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.
PUMP
PULLEY
MOTOR
PULLEY
GPM
RPM
600 PSI
800 PSI
1000 PSI
1300 PSI
1740 PSI
12.75"
3.95"
15.9
500
6.6
8.8
11.0
14.4
19.2
12.75"
4.35"
17.6
555
7.3
9.8
12.2
15.9
21.3
12.75"
4.95"
20.3
640
8.5
11.3
14.1
18.3
24.5
12.75"
5.35"
22.0
695
9.2
12.2
15.3
19.9
26.6
12.75"
5.75"
23.8
750
9.9
13.2
16.5
21.5
28.8
12.75"
6.15"
25.4
800
10.6
14.1
17.6
22.9
30.7
12.75"
6.50"
31.7
1000
13.2
17.6
22.0
28.6
38.3
LP121-5100 PULLEY SELECTION AND HORSEPOWER REQUIREMENTS
