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Instruction Manual
D100380X012
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.
These valves may be installed in many positions by referring to the Actuator Mounting procedures and figure 6 in this
manual. For conventional disks, flow may be in either direction. For FISHTAIL disks, the leading edge of the disk must
be located in the upstream end of the valve (see figure 2).
CAUTION
As noted in the following paragraphs, improper use of additional gasketing materials will damage the valve liner.
The valve body liner extends past or overlaps the valve face producing the partial O‐ring shown in figure 3. It also acts
as the flange gasket. Improper use of additional gasketing materials will damage the valve liner.
Care must be taken during installation to ensure that the pipe flanges are properly supported. Pipe flange support is
required to avoid liner flange joint leakage or problems during valve operation. Slip‐on pipe flanges may be used with
NPS 2, 3, or 4 valves. An NPS 6 valve or larger will require flange adapters for complete liner support.
Mating flanges or pipe flanges with inside diameters smaller than the minimum shown (see table 3) may interfere with
the opening of the disk. Flanges or pipes with an inside diameter larger than the maximum shown (see table 3) may
not be in full contact with the liner. Install flange adapters in each case, either to provide disk clearance or to fully
contact the liner.
Flexible, plastic flanges, fiberglass, slip‐on, or weld‐neck with other than standard inside diameters may not provide
adequate support for the liner. Also, flexible mating flanges can be warped with excessive line bolt load. They may fail
to support the liner at the inside diameter of the valve body. Use flange adapters, available from Emerson Automation
Solutions, during installation to avoid these problems. Whenever a flange adapter is used, a standard flange gasket
must be installed between the line flange and flange adapter. Do not use a flange gasket between the valve and flange
adapter. The partial O‐ring on the liner acts as the flange gasket and any additional gasket here will damage the liner.
The 9500 valve may be used as part of a three‐way valve assembly. The actuator‐valve linkage is adjusted at the
factory; you won't need to adjust the linkage before placing the valve in service. If the valve and actuator are being
re‐installed, after removal, or if you suspect that the linkage is out of adjustment, refer to the Linkage portion of the
Adjustments section before installing the valve in the pipeline. If the valve has been purchased separately, or if the
actuator has been removed, complete the procedures in the Actuator Mounting section of this manual before
proceeding.
9500 Valve
February 2019
3
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