Table of Contents
Advertisement
9500 Valve
February 2019
3. A new disk and shaft should be installed if the taper pin holes have been widened by loosening of the taper pins
(key 15).
Omit the following steps 4 through 8 if a new disk and shaft assembly is to be installed or if the old disk and shaft are to
be reused. Use new taper pins whenever the disk has been removed.
CAUTION
If a new disk is required, a complete disk/shaft assembly must be purchased to avoid damage to valve parts. The old valve
shaft cannot be used with a new disk.
If a new shaft (without disk) has been purchased, be sure to mark the shaft to indicate the disk position as shown in
figure 2.
4. Making certain the taper pin holes are on the actuator side of the valve body, insert the disk into the valve body.
Position the disk at the fully closed position.
5. Installing splined shaft:
a. If the old shaft is available, insert it into the valve body and disk. Line up the taper pin holes in the disk and shaft;
measure and record the distance between the valve body and the splined end of the shaft. Remove the old shaft
and insert the new, un‐drilled shaft. Position the shaft so that there is the same distance between the valve body
and the end of the shaft as noted above.
b. If installing a new shaft, insert the new shaft into the valve body and disk. Measure between the valve body and
the splined end of the shaft. Make certain that the distance is correct to engage the actuator coupling lever.
Be certain that the flat spot or index mark on the end of the shaft is positioned as shown in figure 2.
6. Use a drill or center punch to mark the taper pin holes in the shaft. Remove the shaft and disk from the valve body.
7. Taper pins used in the 9500 valve shaft and disk are American Standard taper pins, as shown in table 5. Using the
disk as a guide, drill taper pin holes through the shaft using drill size shown in table 5.
8. Use an American Standard taper pin reamer to ream the shaft holes. Be certain the reamer is of sufficient length for
the disk hub thickness. Insert the shaft into the disk when reaming so the disk holes can be used as a gauge for
reaming. Allow the reamer to just begin reaming the disk holes. This will ensure proper seating of the pins.
9. Install the disk and shaft into the valve body. Be sure the splined end of the shaft is on the actuator side of the valve
body, that the direction of taper in the taper pin holes match, and that the flat spot or zero mark is positioned as
shown in figure 2.
10. Using a metal sealing compound on the pins for a positive seal, insert the taper pins into the larger end of the taper
pin holes. Drive the pins with a hammer to seat the pins.
11. Attach the thrust plates (key 9) with cap screws (key 10). When tightening the cap screws, do so in small
increments, alternating from one cap screw to another and from one valve side to the other. Tighten the cap screws
until the thrust plates contact the thrust sleeve assemblies snugly. Then rotate the cap screws enough to move the
thrust plates 0.8 mm (1/32 inch) closer to the valve body.
12. Re‐attach the actuator according to the steps in the Actuator Mounting section; then install the valve according to
the steps in the Installation section.
12
Instruction Manual
D100380X012
Advertisement
Table of Contents
