Instruction Manual
D103355X012
24000 Valve
June 2017
4
2. Use 6.4 mm (1/4 inch) O.D. tubing or equivalent for all air lines. If air line exceeds 8 m (25 ft) in length, 9.5 mm (3/8
inch) tubing is preferred. Air pressure not to exceed 2.41 barg (35 psig).
Disassembly
WARNING
If there is evidence of process fluid under pressure leaking from the joint, retighten the valve body/joint nuts and return to
the Warning at the beginning of the Maintenance section. This Warning provides proper steps to isolate the valve and
relieve process pressure.
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.
CAUTION
When adjusting the valve stem do not grip the stem directly with pliers or a wrench. This will damage the surface of the
stem, and cause damage to the packing in the valve. Instead, counter-tighten the two locknuts (key 27) on the stem (key 5)
together. This will allow you to turn the stem by turning the locknuts (key 27) with a wrench.
When placing the valve in a vise, clamp the flat end faces of the valve. Do not try to clamp the rounded sides of the valve.
This will ruin the valve.
Actuator Removal
Access to the internal components of the valve body can be accomplished with the actuator removed. For actuator
maintenance see the following instruction manual (Baumann Actuator Instructions, D103352X012
).
Air-to-Close Actuators
1. Disconnect air supply to the actuator and remove air tubing.
2. Loosen drive nut (key 9) and then remove plug and stem (keys 4 and 5) assembly by holding actuator stem still
while unthreading plug and stem assembly counterclockwise.
3. Remove stem locknuts (key 27), travel indicator (key 58), and yoke drive nut (key 9).
4. Remove actuator from valve.
5. Disconnect air supply to actuator and remove air tubing.
Air-to-Open Actuators
1. Using flexible tubing, apply sufficient air pressure to the actuator to lift the plug off the seat.
2. Loosen drive nut (key 9) and then remove plug and stem (keys 4 and 5) assembly by holding actuator stem still
while unthreading plug and stem assembly counterclockwise.
3. Remove stem locknuts (key 27), travel indicator (key 58), and yoke drive nut (key 9).
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