For version "Actuator stem retracts" and
Type 3277-5 Actuators with an effective di
-
aphragm area of 120 cm², an internal bore
hole ensures that the spring chamber is filled
with air.
NOTICE
When the valve is installed, the side cover of
the actuator must be mounted such that the
vent plug points downward.
EB 8355-1 EN 13
Attachment to control valve
1.2
D2
D1
15
Fig. 4 · Mounting the clamp
Type 3277
with 240, 350
or 700 cm²
Type 3277-5
with 120 cm²
Vent plug
Cover
Vent plug must point
downward when valve is
installed
Switchover plate
Distance plate (15)
Clamp (1.2)
Signal pressure bore
Attachment left Attachment right
Looking onto the signal pressure connection
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