Instruction Manual
D104358X012
easy-e Trim Cartridge
October 2021
6
Maintenance
Inspection and maintenance frequency depends on the severity of service conditions. When the Trim Cartridge is
installed, the spiral wound gasket (which is not repairable) is compressed in order to load and seal the cage gasket
(figure 2, key 4). If the Trim Cartridge is removed and reinstalled, the spiral wound gasket may not provide sufficient
load after initial compression. Therefore, it is not recommended to remove and reinstall Trim Cartridge after initial
installation. Valve packing can be serviced as it does not require decompression of the spiral wound gasket. This
section includes instructions for packing maintenance in the Trim Cartridge.
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing
any maintenance operations:
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Do not remove the actuator from the valve while the valve is still pressurized.
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Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
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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.
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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.
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Vent the pneumatic actuator loading pressure and relieve any actuator spring precompression.
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Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
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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.
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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
Packing Replacement
ENVIRO-SEAL packing systems are designed for quality performance over extended periods. This longevity allows for
packing maintenance to be performed at regularly scheduled plant outages or turnarounds.
Use the following instructions when inspecting or replacing ENVIRO SEAL packing. Additional information can be
found in the ENVIRO-SEAL Sliding-Stem Valves Instruction Manual (
If changing the packing system material to a different material, such as PTFE to Graphite ULF, it is good practice to
review the actuator sizing, as packing friction will change.
CAUTION
To prevent product damage caused by scratching or damaging the packing box wall, take care when removing the old
packing parts from the packing box.