Data Sheet
Bulletin 71.1:CS200
5
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
Figure 3. Type CS200IR Pressure Reducing Regulator with Internal Relief
INLET PRESSURE
OULET PRESSURE
ATMOSPHERIC PRESSURE
Type CS200IR Regulator with Relief
MXXXX
March 2008
Type CS200
PRESSURE RETAINING PLUG
(DO NOT REMOVE)
DISK
RELIEF VALVE STEM
VALVE STEM
RELIEF SEAT
ORIFICE
LEVER
PUSHER POST
CONTROL SPRING
RELIEF VALVE SPRING
WIRE SEAL (OPTIONAL)
DIAPHRAGM
Principle of Operation
Type CS200 Base Regulator Operation
Refer to Figure 3. When downstream demand
decreases, the pressure under the diaphragm
increases. This pressure overcomes the regulator
setting (which is set by the control spring). Through the
action of the pusher post assembly, lever, and valve
stem, the valve disk moves closer to the orice and
reduces gas ow. If demand downstream increases,
pressure under the diaphragm decreases. Spring force
pushes the pusher post assembly downward and the
valve disk moves away from the orice.