Handwheel Variable Displacement
Pumps Models 310/410

The external handwheel control manually regulates the flow from zero to maximum delivery by means of a threaded extension that is used to position the angle of the reaction plate. Changing this angle controls the length of the piston stroke, thereby increasing or decreasing displacement of the pump. Rotating the handwheel one turn results in approximately 1° change in the angle of the reaction plate. One turn of the handwheel changes the flow approximately 1.50 gpm at 1800 rpm (5.7 L/min at 1800 rpm) on the PV 310 series pump. One turn of the handwheel changes the flow approximately 2.0 gpm at 1800 rpm (7.6 L/min at 1800 rpm) on the PV 410 series pump. A pressure relief valve must be incorporated in the circuit to protect the system from excessive pressures.

System Diagram

Drive Shaft Rotation

  Ports**
Pump Rotation of shaft* Oil Flow lnlet Outlet
PF 310 R (CW only) CW A B
PF 400 L (CCW only) CCW B A

*As viewed from the front or shaft end.
**As viewed from the port end (nameplate up).

Typical Performance PV 310 Pumps

  HP at 100 PSI KW at 100 PSI
RPM GPM HP Input L/min kW Input
1200 15.6 1.89 59.0 1.41
1500 19.7 2.86 74.6 2.13
1800 24.1 3.20 91.2 2.39
2400 31.1 3.75 141.9 2.80

Typical Performance PV 410 Pumps

  HP at 100 PSI KW at 100 PSI
RPM GPM HP Input L/min kW Input
1200 21.3 2.47 93.5 1.84
1500 26.4 3.32 99.9 2.48
1800 32.2 4.16 125.7 3.10
2400 38.3 5.30 200.6 3.95

Dimensions

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