Trim Maintenance; Disassembly - Emerson FISHER RSS Series Instruction Manual

Design lined valve
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Instruction Manual
Form 5592
March 2005
W4471 / IL
WITH LOCKING ROPE PARTIALLY REMOVED
12. Manually press the valve stem (key 5) into the
valve until the valve plug contacts the seat ring.
CAUTION
Improper adjustment in step 13 might
cause damage to trim parts. Perform
this step carefully.
13. Thread the travel stop (key 16) onto the valve
stem until there is a 0.5 mm (0.020 inch) gap
between the bottom surface of the travel stop legs
and the top of the bonnet (figure 5).
14. Thread the locknut (key 10) onto the stem and
tighten it against the travel stop.
15. Mount the actuator and secure it with the yoke
locknut (key 14). Connect the actuator stem and
valve stem according to the procedure in the
appropriate actuator instruction manual.

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.
Figure 6. Typical Locking Rope Installation
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.
W4472 / IL
WITH LOCKING ROPE INSTALLED
SEAT
RING
SEAT
RING
TOOL
W4473 / IL
Figure 7. Design RSS Valve Body Shown with Tool
Used to Remove or Install Seat Ring
RSS Valve
7

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