Instruction Manual
D101957X012
V150 and V300 Valves
February 2011
5
WARNING
Personal injury could result from packing leakage. Valve packing was tightened before shipment; however, the packing
might need some readjustment to meet specific service conditions. Check with your process or safety engineer for any
additional measures that must be taken to protect against process media.
If the valve has ENVIRO‐SEAL live‐loaded packing installed, this initial re‐adjustment will probably not be required.
Refer to the ENVIRO‐SEAL Packing System for Rotary Valves instruction manual (D101643X012) for packing
instructions.
Maintenance
Valve parts are subject to normal wear and must be inspected and/or replaced as necessary. The frequency of
inspection and replacement depends upon the severity of service conditions.
WARNING
The Vee‐ball closes with a cutting motion. To avoid personal injury, keep hands, tools, and other objects away from the 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. Make 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
on both sides of the valve. Drain the process media from both sides of the valve.
D Vent the power actuator loading pressure.
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
Key numbers are shown in figure 10, unless otherwise indicated. A detailed view of the packing is also shown in figure
3.
If the valve is equipped with the ENVIRO‐SEAL Packing System, refer to the ENVIRO‐SEAL Packing System for Rotary
Valves instruction manual (D101643X012).
Note
For the ENVIRO‐SEAL Packing System, refer to the Parts List section for individual parts (see figure 3). Refer to the ENVIRO‐SEAL
Packing System for Rotary Valves instruction manual (D101643X012) for maintenance instructions.
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