Pressure Controls: Counterbalance, Sequence and Pressure Reducing Valves
DGMR(1)-3-4*
DGMX*-3-4*
General Description
These single-stage valves operate by
the application of pressure on the end of
the valve spool, acting against a spring
which is loaded by means of the
adjustment mechanism.
In the counterbalance and sequence
valves the spool is offset by the spring
such that flow cannot pass through the
valve. When the force exerted by the
pilot pressure on the spool end exceeds
the force of the main spring, the spool is
moved to allow flow through the valve.
In the pressure reducing valve the flow
path is normally open and is closed as
the pilot pressure exceeds the setting of
the valve. Excessive pressure in the
reduced-pressure line is prevented by a
pressure relieving function.
Pressure adjustment options of control
knob (with or without keylock) or
screw/locknut design are available.
Typical Section
Functional Symbols
P
T
B
A
DGMR-3-TA
DGMR1-3-PP
DGMX*-3-PA
DGMX*-3-PB
DGMX*-3-PP
P
T
B
A
P
T
B
A
P
T
B
A
P
T
B
A
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