Samson 3277-5 - Actuator Stem Retracts; Accessories

3-4 EB 8310-1 EN
Design and principle of operation
3.2.2 Actuator stem retracts
When the signal pressure is reduced or the
control signal fails, the springs move the ac-
tuator stem upward and open a mounted
globe valve. The valve closes when the signal
pressure is increased enough to overcome
the spring force.
3.3 Accessories
Switchover plate/connecting plate
Switchover plates and connecting plates are
listed as accessories.
With in-
dex
Order no.
Switchover
plate
New .01 1400-6822
Old .00 1400-6819
Connecting
plate
New .01 1400-6823
G thread .00 1400-6820
NPT thread .00 1400-6821
Actuators with device index .01 are
equipped with new connecting plates. Old
and new connecting plates are not inter-
changeable.
Note
A2.4
A2.5
A2.9
A2.4
A2.5
A2.6
A2.7
A2.8
A2.4 Symbol
A2.5 Marking for signal pressure input
A2.6 With left attachment
A2.7 With right attachment
A2.8 Sealwithlter
A2.9 Signal pressure connection
Actuator stem extends
Left attach-
ment
Right attach-
ment
Actuator stem
Extends Retracts
Switchover plate Connecting plate
Actuator stem retracts
Left attach-
ment
Right attach-
ment
Fig.3-3: Switchover plate and connecting plate in Type3277-5