Instruction Manual
D101299X012
RSS Valve
July 2017
11
Table 4. Recommended Seat Ring Torque
Valve Size,
NPS
Newton
Meters
Pound‐Force
Inches
Pound‐Force
Feet
1
1‐1/2
8
23
71
‐ ‐ ‐
‐ ‐ ‐
17
2
3
4
30
50
50
‐ ‐ ‐
‐ ‐ ‐
‐ ‐ ‐
22
37
37
Trim Maintenance
Key numbers are shown in figure 10.
Disassembly
1. Remove the actuator and the bonnet as described in steps 1 through 4 of the Replacing Packing and Bushing Inserts
section.
2. Inspect parts for wear or damage that would prevent proper operation of the valve.
3. To replace the bellows (key 6), unscrew the valve stem (key 5) in a counterclockwise rotation. Install the valve stem
into the new bellows with a clockwise rotation by hand. Do not overtighten.
4. To remove the valve plug (key 3), use pliers to remove the locking rope (key 9) that locks the valve plug to the
bellows (key 6) as shown in figure 6. Then unscrew the plug from the bellows.
Note
To avoid cold flow of the valve liner and deforming of the valve body seat ring threads and seat ring contact surfaces, promptly
install a replacement seat ring according to step 1 of the Assembly procedures.
5. To remove the seat ring (key 4), use the seat ring tool (figure 7 or 8) that can be ordered from the Parts List section
or made according to the dimensions in figure 8 and table 3. To avoid cold flow of the valve liner and deforming of
the valve body seat ring threads and seat ring contact surfaces, promptly install a replacement seat ring according
to step 1 of the Assembly procedures.