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Instruction Manual
D104358X012
Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
Personal injury or equipment damage caused by sudden release of pressure may result if the valve assembly is installed
where service conditions could exceed the limits given in table 1 or on the appropriate nameplates. To avoid such injury or
damage, provide a relief valve for overpressure protection as required by government or accepted industry codes and good
engineering practices.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
CAUTION
When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,
pressure drop, and controlled fluid conditions. Responsibility for the safety of process media and compatibility of valve
materials with process media rests solely with the purchaser and end‐user. Since some body/trim material combinations
are limited in their pressure drop and temperature ranges, do not apply any other conditions to the valve without first
contacting your
Emerson sales
Before installing the valve, inspect the valve and pipelines for any damage and any foreign material which may cause
product damage.
1. Isolate the control valve from the pipeline pressure.
2. Release pressure and drain process media from both sides of the control valve.
3. If using a power actuator, also shut off all pressure lines to the power actuator, and release all pressure from the
actuator. Use lock‐out procedures to be sure that the above measures stay in effect while the working on the
equipment.
4. Disconnect the operating lines from the actuator and any leak‐off piping from the bonnet.
5. Disconnect the stem connector and remove the actuator from the valve by unscrewing the yoke locknut. Remove
any travel indicator parts and stem locknuts from the valve stem threads.
WARNING
To avoid personal injury due to leaking fluid, avoid damaging gasket sealing surfaces on the valve body, bonnet, and cage.
The surface finish of the valve stem is critical for making a good packing seal. Unless inspection reveals otherwise, assume
all these parts are in good condition and protect them accordingly.
6. Loosen the body/bonnet nuts (figure 2, key 2) approximately 3 mm (1/8 inch). Then loosen the body‐to‐bonnet
gasket joint by either rocking the bonnet or prying between the bonnet and valve. Work the prying tool around the
bonnet until the bonnet loosens. If no fluid leaks from the joint, remove the nuts completely (see figure 6, key 2).
7. Remove the bonnet and all trim components.
8. Remove and discard the cage gasket (key 4) and the bonnet gasket (key 3).
9. Clean and inspect the cage and bonnet gasket surfaces.
10. Install a new cage gasket (key 4) and a new bonnet gasket (key 3) into the valve body.
office.
easy-e Trim Cartridge
October 2021
3
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