Instruction Manual
D100386X012
DandDAValves
June 2014
3
Ceramic Trim
Some types of ceramic trim, including the VTC (very tough ceramic) variety, can create a spark under certain
circumstances. When the edge of a ceramic part is struck against a second ceramic part with enough force, a spark can
be created.
WARNING
Avoid personal injury and property damage from ignition of process fluid caused by sparks from ceramic trim.
Do not use ceramic trim where the process fluid is unstable or if it is an explosive mixture (such as ether and air).
Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
To avoid personal injury or property damage resulting from the sudden release of process pressure or bursting of parts, do
not install the valve a ssembly where service conditions could exceed the limits given in this manual or on the appropriate
nameplates. Use pressure-relieving devices 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. 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 Process
Management sales office.
1. Before installing the valve, inspect it to be certain that the valve body cavity is free of foreign material. Clean out all
pipelines to remove scale, welding slag, and other foreign materials.
2. Install the valve so that flow through the valve is in the direction shown by the arrow cast on the valve body. The
control valve assembly may be installed in any position unless limited by seismic considerations. However, the
normal method is with the actuator vertical above the valve. With some valves, the actuator may need support
when it is not vertical. For more i nformation, consult your Emerson Process Management sales office.
3. Use accepted piping and welding practices when installing the valve in the line. For flanged valve bodies, use
suitable gaskets between the body flanges and pipeline flanges.
(24 pages)
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