Replacing The Packing (Micro-Flow Valve Version Only) - Samson 3349 Mounting And Operating Instructions

Servicing
Fig. 9-6: Stem seal (micro-flow valve version
without packing)
9.6.1 Replacing the packing
(micro-flow valve ver-
sion only)
Fig. 9-7: Packing (with Type 3379 Actuator)
1. Undo the screws (34) on the valve bon-
net (20.3).
2. Lift the actuator and valve bonnet (20.3)
together with the plug stem (3), plug
(2),and diaphragm (24) off the body (1).
3. Unscrew the plug stem (3) together with
plug (2) and diaphragm (24) off the ac-
9-10
43
4. Unscrew the actuator onto the valve bon-
20.3
42
5. Compress the packing (15, 19, 23) using
41
3
6. Pull the entire packing parts (15, 19, 23)
7. Check the plug (2) and diaphragm (24)
8. Push the plug (2) together with plug stem
9. Carefully slide the packing parts (15, 19,
20.3
10. Compress the packing using a suitable
43
19
15
11. Fasten the actuator onto the valve bonnet
23
19
41
12. Apply a suitable lubricant to the actuator
3
13. Screw the plug stem (3) together with
14. Place the actuator and valve bonnet
tuator stem and pull it out of the valve
bonnet (20.3).
net (20.3).
a suitable tool and remove the snap ring
(43).
out of the packing chamber using a suit-
able tool. Renew the damaged parts and
carefully clean the packing chamber.
for damage. Replace them, if necessary
(see section 9.6.2).
(3) and diaphragm (24) into the valve
bonnet (20.3).
23) over the plug stem (3) into the pack-
ing chamber using a suitable tool.
tool and insert the snap ring (43).
(20.3).
stem.
plug (2) and diaphragm (24) onto the
actuator stem. Observe tightening
torques.
(20.3) together with the plug stem (3),
plug (2) and diaphragm (24) onto the
body (1).
EB 8048-2 EN