Instruction Manual
D104191X012
CCV-N Valve
October 2018
4
Valves with ENVIRO‐SEAL live‐loaded packing or HIGH‐SEAL live‐loaded packing will not require this initial
re‐adjustment. See the Fisher instruction manuals, ENVIRO‐SEAL Packing System for Sliding‐Stem Valves
(
) or HIGH‐SEAL Live‐Loaded Packing System (
) (as appropriate), for packing instructions.
If you wish to convert your present packing arrangement to ENVIRO‐SEAL packing, refer to the retrofit kits listed in the
Parts Kit sub‐section near the end of this manual.
Maintenance
Valve parts are subject to normal wear and must be inspected and replaced as necessary. Inspection and maintenance
frequency depends on the severity of service conditions. This section includes instructions for packing maintenance
and trim maintenance. All maintenance operations may be performed with the valve in the line.
WARNING
Avoid personal injury or property damage from sudden release of process pressure. Before performing any maintenance
operations:
Do not remove the actuator from the valve while the valve is still pressurized.
Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
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.
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.
Release the actuator loading pressure and relieve any actuator spring pre-compression.
Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
The valve packing box 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, or when
loosening the packing box pipe plug.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
CAUTION
Follow instructions carefully to avoid damaging the product surfaces, which could result in damage to the product. Protect
all surfaces of the valve plug, valve seat ring, and seat ring retainer during maintenance to ensure control valve accuracy
and choking performance is not affected.
Note
Whenever a gasket seal is disturbed by removing or shifting parts, a new gasket should be installed upon reassembly. This is
necessary to ensure a good gasket seal, since the used gasket may not seal properly.
