IM-S24-15 CH Issue 4
21
- Using a new gasket (12) refit the bonnet and stem / bellows assembly onto the valve body.
While pushing the stem so that the valve plug is on the seat, tighten the bonnet nuts (13) to
the recommended torque (see Table 2).
- Fit the new stem seal set (10 + 15) see Section 4.3, Figure 3 as described in Section 3.1,
ensuring that the valve stem (5) moves freely after assembly.
- Refit the actuator and connect the actuator to the valve stem.
Note: take care not to rotate the valve stem when fitting the actuator to the valve since
this will destroy the bellows. Refer to the Installation and Maintenance Instructions
covering Spirax Sarco actuators.
- Bring the valve back into service.
- Check for leakage around all gasket joints.
7
8
25
22
5
2
4
6
10 and 15
21
20
13
12
24
Fig. 7
16
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