Fisher 9500 User Manual
9500 Valve
Instruction Manual
Form 2433
November 2007
November 2007
3
that must be taken to protect against
process media.
process media.
If installing into an existing
application, also refer to the WARNING
at the beginning of the Maintenance
section in this instruction manual.
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 discs, flow
may be in either direction. For Fishtail discs, the
leading edge of the disc must be located in the
upstream end of the valve (see figure 2).
referring to the Actuator Mounting procedures and
figure 6 in this manual. For conventional discs, flow
may be in either direction. For Fishtail discs, the
leading edge of the disc 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.
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.
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.
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 disc. 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 disc clearance or to fully
contact the liner.
smaller than the minimum shown (see table 3) may
interfere with the opening of the disc. 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 disc 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 Process
Management, 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
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 Process
Management, 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 partial O-ring on the liner acts as the flange
gasket and any additional gasket here will damage
the liner.
The Type 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.
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.
WARNING
Avoid personal injury from sudden
release of process pressure. Before
performing any maintenance
operations:
release of process pressure. Before
performing any maintenance
operations:
D Always wear protective gloves,
clothing, and eyewear when
performing any maintenance
operations to avoid personal injury.
performing any maintenance
operations to avoid personal injury.
D Disconnect any operating lines
providing air pressure, electric power,
or a control signal to the actuator. Be
sure the actuator cannot suddenly
open or close the valve.
or a control signal to the actuator. Be
sure the actuator cannot suddenly
open or close the valve.
D Use bypass valves or completely
shut off the process to isolate the
valve from process pressure. Relieve
process pressure on both sides of the
valve. Drain the process media from
both sides of the valve.
valve from process pressure. Relieve
process pressure on both sides of the
valve. Drain the process media from
both sides of the valve.
D Vent the power actuator loading
pressure and relieve any actuator
spring precompression.
spring precompression.
D Use lock-out procedures to be
sure that the above measures stay in
effect while you work on the
equipment.
effect while you work on the
equipment.
D The valve packing box may
contain process fluids that are
pressurized, even when the valve has
been removed from the pipeline.
Process fluids may spray out under
pressure when removing the packing
pressurized, even when the valve has
been removed from the pipeline.
Process fluids may spray out under
pressure when removing the packing