3
Pump speeds of 640 RPM and above require a minimum inlet pressure of 12 psig.
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
RPM GPM 600 PSI 800 PSI 1000 PSI
1300 PSI
500
22.3
9.3
12.4
15.5
20.1
555
24.7
10.3
13.7
17.2
22.3
640
28.5
11.9
15.8
19.8
25.7
695
30.9
12.9
17.2
21.5
27.9
750
33.4
13.9
18.6
23.2
30.2
800
35.6
14.8
19.8
24.7
32.1
LP122A-3100 PULLEY SELECTION AND
HORSEPOWER REQUIREMENTS
LP122A-3100 Specifications
U.S.
Metric
Volume...........................................................................................
35.4 GPM
............................................
134.1 L/min
Discharge Pressure .......................................................................
1300 PSI
.......................................................90 Bar
Power Consumption ......................................................................
31.9 BHP
....................................................
23.8 kW
Inlet Pressure ................................................................................ 87 PSI .............................................................6 Bar
Speed .....................................................................................................................................................Up to 800 RPM
Plunger Diameter........................................................................... 1.65” ............................................................. 42 mm
Stroke ............................................................................................ 1.65” ............................................................. 42 mm
Crankcase Oil Capacity .................................................................
118 fl. oz.
.....................................................
35 liters
Temperature of Pumped Fluids (seawater) ................................... 86
°F ...............................................................
30 °C
Temperature of Pumped Fluids (excluding seawater) ................... 140 °F ............................................................ 60 °C
Inlet Port ..................................................................................................................................................2 x 1-1/2” BSP
Discharge Port ...............................................................................................................................................2 x 1” BSP
Crankshaft Mounting .....................................................................................................................................Either Side
Shaft Rotation ..............................................................................................................Top of Pulley Towards Fluid End
Weight ........................................................................................... 116 lbs. ........................................................ 52.6 kg
Crankshaft Diameter......................................................................
1.38
..............................................................
35 mm
Valve Casing ............................................................................................................................
Nickle Aluminum Bronze
NPSHR .......................................................................................... 25.6 ft. of head ..........................................7.8 mWs
LP250-3100 Specifications
U.S.
Metric
Volume........................................................................................... 25.7 GPM ..............................................
97.3 L/min
Discharge Pressure .......................................................................
2030 PSI
.....................................................140 Bar
Power Consumption ......................................................................
39.7 BHP
....................................................29.6 kW
Inlet Pressure ................................................................................ 87 PSI .............................................................6 Bar
Speed ...................................................................................................................................................Up to 1000 RPM
Plunger Diameter...........................................................................
1.30”
.............................................................
32 mm
Stroke ............................................................................................ 1.65” ............................................................. 42 mm
Crankcase Oil Capacity .................................................................
118 fl. oz.
....................................................
3.5 liters
Temperature of Pumped Fluids (seawater) ................................... 86
°F ................................................................
30
°C
Temperature of Pumped Fluids (excluding seawater) ................... 140 °F ............................................................ 60 °C
Inlet Port ..................................................................................................................................................2 x 1-1/2” BSP
Discharge Port ...............................................................................................................................................1 x 1” BSP
Crankshaft Mounting .....................................................................................................................................Either Side
Shaft Rotation ..............................................................................................................Top of Pulley Towards Fluid End
Weight ........................................................................................... 126 lbs. .......................................................... 57 kg
Crankshaft Diameter............................................................................................................................................
35 mm
Valve Casing ............................................................................................................................
Nickle Aluminum Bronze
NPSHR .......................................................................................... 25.6 ft. of Head ........................7.8 meters of Water
RPM GPM 600 PSI 800 PSI 1000 PSI 1600 PSI
2030 PSI
500
12.9
5.4
7.1
8.9
14.3
18.1
600
15.4
6.4
8.6
10.7
17.1
21.7
700
18
7.5
10.0
12.5
20.0
25.4
800
20.6
8.6
11.4
14.3
22.8
29.0
900
23.1
9.6
12.9
16.1
25.7
32.6
1000 25.7
10.7
14.3
17.8
28.6
36.2
LP250-3100 PULLEY SELECTION AND
HORSEPOWER REQUIREMENTS
