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Instruction Manual
D103164X012
Maintenance
WARNING
The V‐notch ball closes with a shearing, cutting motion, which could result in personal injury. To avoid injury, keep hands,
tools, and other objects away from the V‐notch ball while stroking the valve.
Avoid personal injury from sudden release of process pressure. Before performing any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
D Vent the power actuator loading pressure and relieve any actuator spring precompression.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D The valve packing area may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
Packing Maintenance
1. It is recommended that the valve be removed from the line when replacing packing to allow correct set up of the
actuator after actuator removal.
2. Remove the packing follower nuts and packing follower (keys 18 and 16).
3. Remove the packing parts (see figure 4 and keys 15 and 14) using a purposed designed packing extraction tool to
avoid damaging the packing box bore and shaft surfaces.
4. Install the new packing parts using the sequence shown in figure 4. Fit the packing follower (key 16). Fit nuts (key
18).
5. Tighten the packing nuts to compress the packing to seal for operating conditions. At the same time push the ball
and shroud on the drive end against the valve body inside location face to center the ball. This can be done by using
a lever (wood) against the inside ball lug face and the valve body liner inlet.
Disassembly
WARNING
Observe the steps in the WARNING at the beginning of the Maintenance section.
Reference figures 9 and 10.
V150S Slurry Vee-Ball Valve
July 2017
7
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