Fisher 9500 - Manual (Page 12)

9500 Valve
Instruction Manual
Form 2433
November 2007
12
1. Refer to the appropriate actuator instruction
manual for assistance in disconnecting and
removing the actuator lever. Avoid disturbing the
actuator turnbuckle adjustment, if possible.
2. If the valve disc is a Fishtail disc, rotate the disc
180 degrees from the original position.
3. Position the disc in its fully closed position. To
ensure that disc is fully closed, measure equal
distances between valve face and top and bottom of
the disc as shown in figure 2 or check to be sure that
the flat spot or index mark on the valve shaft is in
top-dead-center or bottom-dead-center in relation to
the valve.
WARNING
To avoid personal injury, keep hands
away from the actuator rod in the
following procedure.
4. Note the position of the valve shaft index mark.
Index mark alignments for reversed action are not
shown in figure 6. To determine proper index mark
alignment, proceed as follows:
a. Stroke the actuator to the valve-closed end of
travel and retain that position while performing the
next step.
b. Keeping hands away from the actuator rod,
hold the actuator lever up to the valve shaft so
that the lever end is in line with the actuator rod
end bearing. The lever index mark that is most
nearly in line with the valve shaft index mark is
the index mark that must be used during
reassembly. If changing to push-down-to-close
action with 60-degree operation, the lever index
mark will be offset 1 spline tooth from the valve
shaft index mark for 12.7 through 19.1 mm (1/2
through 3/4-inch) valve shafts and 2 spline teeth
from the valve shaft index mark for 25.4 and 31.8
mm (1 and 1-1/4 inch) valve shafts. This offset
must be maintained during reassembly.
5. Record the alignment determined in step 4,
remove the actuator lever, and shut off operating
pressure to actuator.
6. Reassemble the lever to the actuator and adjust
the actuator travel, if necessary, referring to the
steps in the appropriate actuator instruction manual.
Be sure to use the index mark alignment determined
above rather than those shown in figure 6.
Parts Ordering
A serial number is assigned to each valve body and
stamped on the nameplate. Always refer to the serial
number when corresponding with your Emerson
Process Management sales office regarding spare
parts or technical information. When ordering
replacement parts, also specify the complete
11-character part number from the parts list
information.
WARNING
Use only genuine Fisher replacement
parts. Components that are not
supplied by Emerson Process
Management should not, under any
circumstances, be used in any Fisher
valve, because they will void your
warranty, might adversely affect the
performance of the valve, and could
give rise to personal injury and
property damage.
Note
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use and maintenance of any
product. Responsibility for the
selection, use, and maintenance of any
product remains with the purchaser
and end-user.