Replacing Packing; Actuator And Valve Body Reassembly - Emerson Fisher Baumann 24000S Instruction Manual

24000S Valve
February 2021
2. Install the bonnet (key 8) into the valve body, without gasket and hand tighten. The bonnet will serve as a guide
during the lapping operation.
3. Lap the valve by applying a slight pressure on the stem and rotate the stem in short oscillating strokes
approximately 8 to 10 times or until you see an even and complete lap line. The plug should be intermittently lifted
and turned 90 degrees while lapping to keep the plug and seat ring concentric.
4. Clean the valve seat and plug (key 4) thoroughly when lapping is complete, removing all traces of lapping
compound.
5. For the NPS 1 through 3 integral seat valve body, inspect the internal seating surface for wear or damage and
replace if necessary.

Replacing Packing

Refer to figure 2 and the standard and optional packing constructions (figure 7) to determine the packing that has
been preinstalled in your valve.
1. Disassemble the valve as directed earlier. Remove the locknuts (key 27) and indicator disk (key 58), and turn the
plug and stem (keys 4 and 5) out through the packing box. Remove the packing follower (key 10). Push out the old
packing (key 14) by working from the underside of the bonnet (key 8).
2. Standard Spring Loaded PTFE V-Ring Packing (figures 2 and 7): Carefully insert each piece in exact order shown in
figure 7. Tighten the packing follower (key 10) until it shoulders on the bonnet (key 8). This will compress the
packing spring (key 7) to enable constant stem sealing throughout packing life.
3. Molded Graphite Ribbon Packing (figure 7): Carefully insert each piece in exact order shown in figure 7. Hand
tighten the packing follower (key 10). Use a wrench to increase tightness by turning the follower an additional 60
degrees.
4. ENVIRO-SEAL ™ Packing (figure 7): Carefully insert each piece in exact order as shown in figure 7. Tighten the
packing follower (key 10) until the Belleville springs are compressed. This will be signaled by a significant increase in
resistance. Back off the follower 1/8 to 1/4 turn. A gap of approximately 1.5 mm (1/16 inch) between the packing
follower and the bonnet will ensure the packing is seated properly.
5. For Optional NOLEEK Bellows Seal Packing (figure 6): Insert each piece in the exact order shown in the illustration.
Tighten the packing follower (key 10) until it shoulders on the bonnet (key 8). This will compress the packing
springs (key 7) to provide constant stem sealing throughout packing life.

Actuator and Valve Body Reassembly

1. Insert a new valve body gasket (key 49) and install the bonnet assembly (key 8). For NPS 1/2 to 1 valves, tighten the
nuts (key 12) to a torque of 9.5-17.6 NSm (7-13 lbfSft); NPS 1-1/2 to 2 valves, tighten nuts (key 12) to a torque of
21.7-42.0 NSm (16-31 lbfSft).
2. Place the actuator yoke over the stem (key 5). While tilting the actuator back, drop the yoke drive nut (key 9) over
the stem (key 5). Run the locknuts (key 27), and the travel indicator (key 58), down as far as possible and counter
tighten the locknuts (key 27) to lock.
See the following instruction manual (Baumann Actuator Instructions, D103352X012) for reassembly and bench
range adjustment.
CAUTION
When assembling or disassembling the valve, do not turn the valve stem while the plug is in contact with the valve seat.
This can damage the seating surface very quickly.
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Instruction Manual
D103359X012