Pressure Regulator
Pressure Regulator
In a pneumatic system, energy that will be used by the system and transmitted
through the system is stored as potential energy in an air receiver tank in the form of
compressed air.
A pressure regulator is positioned after a receiver tank and is used
to portion out this stored energy to each leg of the circuit.
A pressure regulator is a normally open valve.
to portion out this stored energy to each leg of the circuit.
A pressure regulator is a normally open valve.
With a regulator positioned after a receiver tank, air from the receiver can expand
(flow) through the valve
to a point downstream. As pressure after the regulator rises,
it is sensed in an internal pilot passage leading to the underside of the piston.
This piston has a large surface area exposed to downstream pressure and for this
reason is quite sensitive to downstream pressure fluctuations.
When downstream pressure nears the preset level, the piston moves upward pulling the poppet towardits seat.
The poppet, once it seats, does not allow pressure to continue building
downstream. In this way, a constant source of compressed air is made available to an actuator downstream.
downstream. In this way, a constant source of compressed air is made available to an actuator downstream.
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