Instruction Manual
D101554X012
Vee-Ball Valves
March 2021
9
If the valve is equipped with the ENVIRO‐SEAL Packing System, refer to:
D the separate ENVIRO‐SEAL Packing System for Rotary Valves instruction manual (D101643X012
) for maintenance
instructions, and
D the Parts List section of this manual for retrofit kits, parts kits, and individual parts.
If the packing is relatively new and tight on the drive shaft (key 6), and if tightening the packing follower nuts does not
stop leakage, it is possible that the drive shaft is worn or nicked so that a seal cannot be made. If the leakage comes
from the outside diameter of the packing, it is possible that the leakage is caused by nicks or scratches on the packing
box wall. Inspect the drive shaft and packing box wall for nicks or scratches while performing the following procedure.
Replacing Packing
When using this procedure, it is recommended that the actuator not be removed from the valve while the valve is still
in the pipeline or between flanges. Valve/actuator adjustments must be made with the valve out of the pipeline. Refer
to the Determining Closed Position portion of the Actuator Mounting section.
Disassembly
WARNING
Observe the steps in the WARNING at the beginning of the Maintenance section.
1. Isolate the control valve from the line pressure, release pressure from both sides of the valve body, and drain the
process media from both sides of the valve. If using a power actuator, shut off all pressure lines to the power
actuator, release pressure from the actuator, and disconnect the pressure lines from the actuator. Use lock‐out
procedures to be sure that the above measures stay in effect while you are working on the equipment.
2. Remove line bolting, remove the control valve from the pipeline, and place the valve/actuator assembly on a flat
surface with the seal protector ring facing up.
3. Remove the actuator cover. Take note of the orientation of the actuator with respect to the valve body and the
lever orientation with respect to the valve drive shaft (see figure 6).
WARNING
When the actuator is removed from the valve, the ball/shaft assembly may suddenly rotate, with a shearing, cutting
motion, which could result in personal injury. To avoid injury, carefully rotate the ball to a stable position after the actuator
is removed.
CAUTION
When removing the actuator from the valve, do not use a hammer or similar tool to drive the lever or actuator off the valve
shaft. Driving the lever or actuator off the valve shaft could damage the ball, seal, and valve. If necessary, use a puller to
remove the lever or actuator from the valve shaft. It is okay to tap the puller screw lightly to loosen lever or actuator, but
hitting the screw with excessive force could damage the ball, seal, and valve.
4. Remove the clamped lever (do not loosen the actuator turnbuckle adjustment), remove the actuator mounting
screws and nuts (keys 23 and 24), and remove the actuator. (If necessary, refer to the actuator instruction manual
for assistance.)
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