Page 10 - Parker - P1/PD series medium duty axial piston pumps

HY28-2665-01/P1/EN Medium Duty Axial Piston Pumps
Technical Information P1/PD Series

Control Options “AM”
Pilot Operated Pressure Limiter Control
with Vent Port V
This control allows the pump pressure compensator demanded, but at the maximum pressure setting
setting to be adjusted from a remote relief valve. of the compensator control. If the outlet flow is
The control acts such that full pump displacement is completely blocked, the pump will destroke to zero
achieved unless the system valve restricts the output displacement and maintain the pressure at the
flow or the load pressure reaches the maximum setting of the remote relief valve.
setting of the control. If pump flow is restricted by the
system valve, the pump will provide only the flow

pilot-operated pressure limiter control pilot-operated pressure limiter control with minimum displacement stop
4 bar maximum 4 bar maximum

flow flow

pressure pressure

B V B V
) ( .8mm ) ( .8mm

BG BG

D3 D3
D2 D2

A D1 A D1

“AM” “AM”
Pilot Operated Pressure Control with Optional Minimum & Maximum
Displacement Adjustments and
Case-to-Inlet Check Valve
(A minimum displacement stop requires
the use of a system relief valve.)
Refer to page 4 for typical control characteristics.

Parker Hannifin Corporation
Hydraulic Pump Division
8 Marysville, Ohio USA