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Instruction Manual
D104496X012
Figure 3. Actuator Components for Size 40i, 46i, and 60i Actuators
657C Actuator (40i, 46i, and 60i)
DIAPHRAGM CASINGS
DIAPHRAGM
DIAPHRAGM PLATE
TRAVEL STOP
YOKE EXTENSION
ACTUATOR SPRING
ACTUATOR STEM
SPRING SEAT
SPRING ADJUSTOR
STEM CONNECTOR
INTEGRAL INSTRUMENT PAD
TRAVEL INDICATOR
INDICATOR SCALE
YOKE
November 2019
5
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