Samson 3374 Series - Servicing

5-4 EB 8331-4 EN
Installation
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.5-7: Attachment to Type3214
Attachment to Type3214 Valve (DN125 to
250)
Î RefertoFig.5-7.
1. Retract the actuator stem using the manu-
al override (see the 'Operation' section).
Actuating shaft
Fig.5-6: Actuating shaft for manual override
(actuator for attachment with ring nut)
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plugstemtscloselyontothe
actuator stem (3), attach both stem con-
nector clamps (4) and fasten with screws.
Tightening torque 150Nm
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.