Actuator - Fisher D4 Instruction Manual

D4 Valve
July 2015
Assembly
Refer to figures 2, 3, 4, and 5.
Note
If your D4 valve assembly has a packing retainer lock ring (see figure 6), proceed to Appendix A.
1. Ensure the upper packing spacer (key 48) is installed, as shown in figure 2.
2. Using a non‐marring installation tool, such as a 12‐inch length of 1/2 inch PVC pipe, push the first anti‐extrusion
washer (key 12) fully into the packing box by hand. Then, use the packing spacer (key 14) to fully seat the
anti‐extrusion washer by firmly tapping the packing spacer against the anti‐extrusion washer with a hammer and
the PVC pipe.
3. Remove the packing spacer from the packing bore.
CAUTION
All D4 packing kits include a single use packet of high performance fluorinated grease. This is the only acceptable D4
packing lubricant.
Note
In the following procedure, carefully install each packing ring individually over the valve stem and push completely into the
packing box with a non‐marring tube. A 12‐inch length of 1/2 inch PVC pipe works well for this. It is recommended that the
lubricated packing rings be installed individually rather than pushed in as a set.
4. Apply a 3mm (1/8 inch) bead of the supplied high performance fluorinated grease (key 44) around the groove of
the female packing adaptor as shown in figure 3 and install over the valve stem (key 16).
5. Apply a 3mm (1/8 inch) bead of the supplied high performance fluorinated grease (key 44) around the groove of
the packing ring as shown in figure 3 and install over the valve stem.
6. Install the male packing adaptor, lower anti‐extrusion washer (key 10), and lower packing spacer over the valve
stem as shown in figure 2.
7. Firmly press all packing parts into the packing bore with a tube.
8. Install the five Belleville springs (key 11) over the valve stem. The Belleville springs should be single‐stacked with the
inside diameter of the inner spring contacting the packing spacer (key 14), and the outside diameter of the outer
spring contacting the packing retainer (key 10).
9. Lubricate the threads of the packing retainer with anti‐seize and install into the bonnet using a 1‐5/8 inch wrench.
Make sure the Belleville springs are completely enclosed by the packing retainer as shown in figure 2.
10. Torque the packing retainer to 136 NSm (100 lbfSft). The packing retainer has been installed correctly when a
metal‐to‐metal contact has been made between the packing retainer end and the bonnet (key 5). The packing
retainer threads should be completely enclosed by the bonnet.
Actuator (Spring‐to‐Close)
WARNING
Observe the warning at the start of the Maintenance section.
Refer to figure 4.
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Instruction Manual
D103042X012