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D3 Valve with Gen 2 easy-Drive Actuator
February 2021
10. Apply anti‐seize lubricant to the threads on the valve body and bonnet nut (key 5) and the contact surfaces of the
bonnet and bonnet nut flange. Install the bonnet and actuator assembly onto the valve body. Tighten the bonnet
nut until the nut stops turning. A few hammer blows will be required to ensure that the assembly is tight.
Packing Maintenance
WARNING
Observe the warning at the start of the Maintenance section.
Key numbers are referenced in figure 20.
The valve stem packing can only be serviced by removing the bonnet from the valve body.
Packing Disassembly
1. Disassemble the valve per steps 1 ‐ 9 in the Trim Disassembly section of the Valve Plug and Seat Ring Maintenance
section of this manual.
2. Remove the five Belleville springs (key 9), lower packing spacer (key 12), packing set (key 11), and two
anti‐extrusion washers (key 10) from the bonnet (key 7) using a formed wire hook.
3. Clean and inspect the packing box wall to ensure that the packing surfaces are not damaged. If the surface
condition is damaged and cannot be improved by light sanding, replace the bonnet.
4. Inspect the valve stem (key 16) and valve plug (key 3) for scratches or wear and replace if necessary.
Packing Assembly
The following steps define the proper procedure for installing the packing in a D3 valve. Improper packing assembly
can lead to poor valve performance. The proper packing arrangement is shown in figures 20 and 21.
1. Ensure the upper packing spacer (key 12) is installed.
2. Use the lower packing spacer (key 12) and a tube to push the upper anti‐extrusion washer (key 10) into place. Using
the lower packing spacer in this manner will ensure the upper anti‐extrusion washer is fully seated and flat when
installed in the packing bore.
3. Remove the lower packing spacer from the packing bore.
CAUTION
All D3 packing kits include a single use packet of high performance fluorinated grease. This is the only acceptable D3
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 20 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 20 and install over the valve stem.
24
Instruction Manual
D104161X012
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