
Bulletin 71.1:CS400
10
Figure 8. Type CS404ET Externally Registered Regulator with Slam-shut Operational Schematic
Figure 9. Type CS404IT Internally Registered Regulator with Slam-shut Operational Schematic
SLAM-SHUT
PRIMARY REGULATOR
PRESSURE RETAINING PLUG
(DO NOT REMOVE WHILE UNIT
IS PRESSURIzED)
CONTROL SPRING
RELIEf
SPRING
ADjUSTING
SCREW
PUSHER
POST
LEVER
VALVE STEM
DISk
SLAM-SHUT DISk
RESET kNOb
SLAM-SHUT
VENT
OPSO SPRING
OPSO ADjUSTING
SCREW
SLAM-SHUT
ORIfICE
ORIfICE
TYPE VSX4 SLAM-SHUT MODULE
PRIMARY REGULATOR
CONTROL SPRING
RELIEf
SPRING
ADjUSTING
SCREW
EXTERNAL
CONTROL LINE
CONNECTION
(SENSE LINE)
PUSHER
POST
LEVER
VALVE STEM
DISk
SLAM-SHUT DISk
RESET kNOb
SLAM-SHUT
VENT
OPSO SPRING
OPSO ADjUSTING
SCREW
SLAM-SHUT
ORIfICE
ORIfICE
UPSO ADjUSTING
SCREW
UPSO SPRING
M1064
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
M1063
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
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