Instruction Manual
D104191X012
CCV-N Valve
October 2018
3
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 over-pressure 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. Since some valve 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
1. Before installing the valve, inspect the valve and associated equipment for any damage and any foreign material.
2. Make certain the valve body interior is clean, that pipelines are free of foreign material, and that the valve is
oriented so that pipeline flow is in the same direction as the arrow on the side of the valve.
3. It is recommended the valve should be installed in the vertical orientation with the actuator vertical above the
valve. Other positions may result in uneven valve plug, seal set, seat ring, seat ring retainer, packing wear and
improper operation. For more information, consult your Emerson sales office.
4. It is recommended the valve upstream pipe inside diameter should match or be close to valve body inlet inside
diameter to reduce valve inlet turbulence.
5. It is recommended to have a length of 6 to 12 pipe diameters of straight pipe upstream of the valve body inlet and 4
to 8 pipe diameters length downstream of the valve seat ring outlet. The straight pipe upstream and downstream
of the valve body should have a smooth inside surface with no weld slag or other inside surface irregularities. It is
recommended that pipe reducers not be installed in the straight pipe upstream and downstream of the valve.
6. Use a suitable gasket between valve and pipeline flanges.
7. If continuous operation is required during inspection or maintenance, install a three-valve bypass around the
control valve assembly.
8. Refer to the actuator mounting procedure in the appropriate actuator instruction manual.
WARNING
Personal injury could result from packing leakage. Valve packing was tightened before shipment; however, the packing
might require some readjustment to meet specific service conditions.
