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Instruction Manual
D103031X012
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 accepted industry or local, state, and Federal
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
This valve is intended for a specific range of pressures, temperatures, and other service conditions (see table 1). Applying
different pressure, temperature, and other conditions to the valve could result in parts damage, malfunction of the valve,
or loss of control of the process. Do not expose this valve to service conditions or variables other than those for which this valve
is intended. If you are not sure what these conditions are, you should contact your Emerson Process Management sales
office for more complete specifications.
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. The control valve assembly may be installed in any orientation unless limited by seismic criteria.
The standard flow direction is indicated by the arrow on the valve body.
3. Use accepted piping practices when installing the valve in the pipeline.
4. If continuous operation is required during inspection or maintenance, install a three-valve bypass around the
control valve assembly.
Note
The NPS 1 D2 FloPro valve is equipped with ENVIRO-SEALt D2 packing.
The actuator is available from the factory as either air-to-open or air-to-close.
Additionally, the actuator as shipped from the factory, has the FloPro flow adjuster set at a 0.375 inch port flow rate
position. If some other flow rate is desired, see the Setting Valve FloPro Flow Adjuster section in this manual.
D2 FloPro Valve
June 2011
3
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