Instruction Manual
D104425X012
V280 Valve
August 2019
4
Installation
WARNING
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To avoid personal injury, always wear protective gloves, clothing, and eyewear when performing any installation
operations.
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To avoid personal injury or property damage resulting from the bursting of pressure retaining parts, be certain the
service conditions do not exceed the limits given in this manual.
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To avoid personal injury or property damage that can result from the sudden release of process pressure if valve or
mating pipe flange pressure ratings are exceeded, provide a relief valve for over‐pressure protection as required by
government or accepted industry codes and good engineering practices.
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Service conditions are limited for valve and trim material combinations. Do not apply any other service conditions to the
valve without first contacting your
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Personal injury could result from packing leakage. See the Packing Maintenance section for adjustment information.
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Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
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If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
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Use proper lifting and rigging practices while moving the valve or valve/actuator assembly.
Key number locations are shown in figure 4 unless otherwise noted. Throughout this manual, the component key
number will be identified for clarity.
1. Install a three‐valve bypass around the control valve assembly if continuous operation will be necessary during
inspection and maintenance of the valve.
2. The valve is normally shipped as part of a control valve assembly, with a factory adjusted actuator mounted on the
valve. If the valve or actuator has been purchased separately, or if the actuator has been removed, refer to the
Actuator Mounting section and the appropriate actuator instruction manual for installation and adjustment
procedures.
3. The standard valve construction allows uni-directional flow. If possible, install the valve in a horizontal pipeline with
the drive shaft (key 20) horizontal. The actuator can be right- or left-hand mounted in any of the positions shown in
the actuator instruction manual.
CAUTION
Be certain the valve and adjacent pipelines are free of any foreign material that could damage the valve sealing surfaces.
Impurities or entrained solids in the process fluid could plug the passages in the trim. If the process fluid is not clean, install
a filter upstream to keep the pipeline free of impurities or entrained solids.
4. Provide appropriate flange gaskets, and place the valve in the pipeline. Tighten flange bolting in a star pattern to
ensure the flange gaskets are compressed evenly.
Note
Standard Fisher V280 valve packings (key 105) are composed of:
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Conductive packing ring (graphite ribbon packing), or
