The remote pressure compensator control is designed for
those applications where frequent adjustment of the compensating
pressure and/or multiple pressure control circuits is desired.
It adjusts pump delivery automatically to meet system flow
requirements while maintaining the preselected pressure.
The compensator pressure setting is determined by the setting
of the pilot relief valve, located at a convenient position
remote from the pump. When the pump discharge pressure is
below the setting of the remote valve, fluid is ported through
the compensator valve spool to the large control piston, stroking
the pump. When the discharge pressure reaches the desired
setting, the relief valve opens and the compensator valve
opens reducing pump flow to maintain the set pressure.
The remote compensator can be used in a two pressure (hi-low)
circuit by adding a two-way valve between the pilot line to
the remote relief valve and reservoir. When the two way valve
is open, system compensating pressure is determined by the
spring setting in the compensator valve. When the two-way
valve Is closed, system pressure Increases to the sum of the
spring setting and the setting of the remote relief valve.
Additional two-way valves and relief valves connected in a
series between the pilot line and the reservoir can be Included
to obtain Intermediate pressure settings. Distances between
pump and control of 50 feet or less can be used without affecting
pump response time. For systems that require distances from
pump to control in excess of 50 feet, contact the factory.
Relief valves are recommended in all systems
and should be set at 10% over the desired compensator setting.
In systems using accumulators or pressure compensated flow
control valves, a check valve must be installed at the pump
outlet port. This is desirable in all systems.
OPTIONAL ADJUSTABLE VOLUME — The maximum desired volume
to be pumped can be controlled by the volume limit adjustment.
This adjustment screw limits the maximum angle of the reaction
plate to a predetermined maximum.