Fisher EZ easy-e Instruction Manual page 18

EZ Valve
November 2017
4. Place the spiral wound gasket, shim, and bonnet gasket (keys 12, 25, 10) on the shoulder of the seat ring retainer.
5. Mount the bonnet on the valve body and complete the assembly according to steps 10 through 15 of the Replacing
Packing procedure, omitting steps 12 and 13 if new packing is not being installed. Be sure to observe the note prior
to step 11.
Note
When connecting the valve stem to the stem connecting block on the actuator, extra stem force is required on the valve plug to
ensure proper seating of the plug to the seat ring. This is required to deform the soft seat disk ensuring a backup metal­to­metal
mating surface between the valve plug guide post and the seat ring.
Valves with ENVIRO‐SEAL Bellows Seal Bonnets
Perform the following steps to assemble and install the trim.
1. For valves with 0.25 and 0.375‐inch ports and composition seats, refer to figure 13. Place the disk (key 29) on the
valve plug tip (key 30). Place the disk retainer (key 28) over the disk, and then thread the disk retainer onto the valve
plug guide (key 27).
CAUTION
To avoid failure in service of valves with 0.5 through 1‐inch ports and composition seats, never reuse an old valve plug
guide with a new valve plug tip. Using an old valve plug guide with a new plug tip requires drilling a new pin hole in the
valve plug guide, which will weaken the guide. However, a used valve plug tip may be reused with a new valve plug guide.
For valves with 0.5 through 1‐inch ports and composition seats, refer to figure 13. Insert the disk (key 29) in the valve
plug guide (key 27). Screw the tip (key 30) onto the valve plug guide to clamp the disk in place. Using a 3/32‐inch bit,
drill through the valve plug guide using the hole in the tip as a drilling guide. Remove any chips or burrs and drive in a
new pin (key 31).
CAUTION
To avoid failure in service of valves with 1.5 and 2‐inch ports and composition seats, never reuse an old valve plug tip with a
new valve plug guide. Using an old valve plug tip with a new valve plug guide requires drilling a new pin hole in the valve
plug tip, which will weaken the tip. However, a used valve plug guide may be reused with a new valve plug tip.
For valves with 1.5 and 2‐inch ports and composition seats, refer to figure 13. Insert the disk (key 29) in the valve plug
guide (key 27). Screw the tip (key 30) into the valve plug guide to clamp the disk in place. Using a 3/32‐inch bit, drill
through the valve plug tip using the hole in the valve plug guide as a drilling guide. Remove any chips or burrs and
drive in a new pin (key 31).
For valves with 3 and 4‐inch ports and composition seats, refer to figure 13. Insert the disk (key 29) in the valve plug
guide (key 27). Place the tip (key 30) against the valve plug guide to clamp the disk in place. Insert the cap screw (key
32) through the tip and thread it into valve plug guide to secure the tip to the valve plug guide.
CAUTION
To avoid weakening the adaptor that may cause failure in service, never reuse an old adaptor with a new valve plug or valve
plug guide. Using an old adaptor with a new valve plug or valve plug guide requires drilling a new pin hole in the adaptor,
which will weaken the adaptor. However, a used valve plug or valve plug guide may be reused with a new adaptor.
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Instruction Manual
D100401X012