Samson 3374 Mounting And Operation Instructions page 25

Actuating shaft
Fig. 5-6:
Actuating shaft for manual override
(actuator for attachment with ring
nut)
Note
For actuators with "actuator stem extends"
fail-safe action, the supply voltage must be
applied to allow the actuator stem be retract-
ed. To apply the supply voltage, proceed as
described in section 5.6.
4. Place actuator onto the valve bonnet
(2.3) and secure using the ring nut (7).
5. When the stem connector nut (8) rests on
the actuator stem (3), attach both stem
connector clamps (4) and fasten with
screws.
Tightening torque
6. Move the actuator stem (3) to the end
position (valve closed) as described in
the 'Operation' section.
7. Align travel indicator scale (10) with the
middle of the stem connector (4) and
screw tight.
EB 8331-3 EN
Connection with ring nut (form A)
2.3
150 Nm
Fig. 5-7:
Types 3374-15/-17/-26/-36
Attachment to Series 240 Valves
1
7
3
4
8
9
1 Actuator
2.3 Bonnet
3 Actuator stem
4 Stem connector
5 Plug stem
7 Ring nut
8 Stem connector nut
9 Lock nut
10 Travel indicator scale
Attachment to Series 240 Valves
Installation
x
10
5
5-5