Instruction Manual
D100310X012
667 Actuator (Size 30/30i - 76/76i and 87)
June 2017
6
b. For all other size actuators:
D Slowly lower the actuator down onto the valve. As the yoke passes over the end of the valve stem, place the yoke
locknut over the valve stem. (Note: On small size actuators, it may be necessary to remove the indicator disk and
re‐install it while lowering the actuator onto the valve because the disk will not go through the actuator yoke
opening).
D Continue to lower the actuator while guiding the valve stem into the opening in the end of the actuator stem until
the actuator is in place (see figure 4).
D Screw the yoke locknut onto the valve bonnet and tighten the locknut.
4. Do not connect the actuator stem to the valve stem at this time. Whenever the actuator is installed on the valve, it
is recommended that you perform the Bench Set Spring Adjustment procedures below, to verify that the actuator is
still adjusted correctly.
Figure 3. Actuator‐Mounting Components for Size 30/30i through 70/70i Actuators
VALVE STEM
YOKE LOCK NUT
YOKE BOSS
DIAMETER
BONNET
TYPICAL VALVE
(REFER TO
VALVE MANUAL)
W6199-1
MATCH
LINE FOR
ACTUATOR
VENT ASSEMBLY
DIAPHRAGM CASINGS
DIAPHRAGM AND STEM
SHOWN IN DOWN POSITION
DIAPHRAGM
PLATE
LOADING AIR
PRESSURE CONNECTION
ACTUATOR SPRING
ACTUATOR STEM
SPRING SEAT
SPRING ADJUSTOR
STEM CONNECTOR
YOKE
TRAVEL INDICATOR DISK
INDICATOR SCALE
X1184
X1185
SIZE 30 THROUGH 76 SIZE 30i THROUGH 76i
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