Samson 3374 - Page 26

5-6 EB 8331-3 EN
Installation
Attachment to Type3214 Valve (DN125 to
250)
Î SeeFig.5-9.
1. Retract actuator stem (3) as described in
the'Operation'section(seeFig.5-8and
Fig.5-9).
Actuating shaft
Fig.5-8: Actuating shaft for manual override
(actuator for attachment with ring
nut)
For actuators with "actuator stem extends"
fail-safe action (see nameplate), the supply
voltage must be applied to allow the actua-
tor stem be retracted. To apply the supply
voltage, proceed as described in section5.6.
2. Place actuator onto the valve and secure
using the ring nut (7). If necessary, re-
tract the actuator stem slightly before-
hand.
3. When the stem connector nut (5) rests on
the actuator stem (3), attach both stem
connector clamps (4) and fasten with
screws.
Tightening torque 150Nm
Note
4. Move the actuator stem (3) to the end
position (valve closed) as described in
the 'Operation' section.
5. Align travel indicator scale (10) with the
middle of the stem connector (4) and
screw tight.
Type3374-15
Connection with ring nut (formA)
AttachmenttoType3214Valve(DN125to
250)
1
2.2
7
3
10
4
5
1 Actuator
2.2 Valve yoke
3 Actuator stem
4 Stem connector
5 Plug stem
7 Ring nut
10 Travel indicator scale
Fig.5-9: Attachment to Type3214