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Bulletin 71.2:627F

3

Figure 2. Type 627F Pilot-Operated Pressure Reducing Regulator Operational Schematic

A6558

PILOT SUPPLY TUBING

(FACTORY INSTALLATION OPTIONAL)

PILOT ADJUSTING

SCREW

FILTER

(FACTORY

INSTALLATION

OPTIONAL)

RESTRICTION

(BLEED)

TENSION

SPRING

SPRING SEAT BOLT,

THIS IS NOT AN

ADJUSTING SCREW

FIELD INSTALLED

DOWNSTREAM

CONTROL LINE

PILOT DIAPHRAGM

TYPE 6351F PILOT

TYPE 627F REGULATOR

MAIN REGULATOR

DIAPHRAGM

LEVER

VALVE

DISK

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

LOADING PRESSURE

1 2 3 4 5 6 7 8 ... 11 12

Reducing Regulator 1
Bulletin 71.2:627F 10

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