Fisher EZ easy-e Instruction Manual page 16

EZ Valve
November 2017
Valves with Plain or Extension Bonnets
Perform the following steps to assemble and install the trim.
CAUTION
To avoid weakening the stem that may cause failure in service, never reuse an old stem with a new valve plug. Using an old
stem with a new plug requires drilling a new pin hole in the stem,which will weaken the stem. However, a used valve plug
may be reused with a new stem.
1. For valves with metal seats, screw the valve stem (key 7) into the valve plug (key 2). Tighten to the torque value
given in figure 10. Refer to figure 10 to select the proper drill size. Drill through the stem using the hole in the valve
plug as a guide. Remove any chips or burrs and drive in a new pin (key 8) to lock the assembly.
2. 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 for 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 for 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 failure in service, never reuse an old stem with a new valve plug guide. Using an old stem with a new valve plug
guide requires drilling a new pin hole in the stem, which will weaken the stem. However, a used valve plug guide may be
16
Instruction Manual
D100401X012