Et-C And Ewt-C Trim Assembly; Coining Soft Metal-To-Metal Seats; Parts Ordering - Emerson Fisher EZ-C Instruction Manual

EZ-C, ET-C, and EWT-C Valves
July 2017
5. To replace the valve stem (key 7), drive or drill out the pin (key 8). Unscrew the valve plug from the stem.
6. Screw the new stem into the valve plug. Tighten to the torque value given in table 5. Refer to table 5 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 to lock the assembly.
ET‐C and EWT‐C Trim Assembly
Key number locations are shown in figure 9, unless otherwise noted.
1. Install the seat ring gasket (key 13), and seat ring (key 9) or disk seat (key 22). With composition seat constructions,
install the disk (key 23) and disk retainer (key 21).
2. Install the cage (key 3). Any rotational orientation of the cage with respect to the valve body is acceptable.
3. Lower the valve plug (key 2) and stem assembly into the cage. Make sure the seal ring (key 28) is evenly engaged in
the entrance chamfer at the top of the cage (key 3) to avoid damaging the ring.
4. Place the gaskets (keys 12 and 10) and the shim (key 51) on top of the cage.
5. With an NPS 8 ET‐C or NPS 10X8 EWT‐C valve, install the load ring (key 26).
6. Mount the bonnet on the valve body and complete assembly using the Replacing Packing procedures in the
Maintenance section. Torque guidelines for body‐to‐bonnet bolting are shown in table 4.
7. If the valve has soft metal‐to‐metal seats, refer to the Coining Soft Metal‐to‐Metal Seats section, below.
Coining Soft Metal‐to‐Metal Seats
Soft metal‐to‐metal seat constructions consist of a valve plug with hardfaced CoCr‐A seat and a non‐hardfaced S31600
seat ring. For optimum shutoff performance of these constructions, coin seats by stroking the valve plug into the seat
ring at least three times with maximum actuator force.
CAUTION
To avoid possible product damage which may affect performance, do not lap soft metal‐to‐metal seats.

Parts Ordering

Each body‐bonnet assembly is assigned a serial number which can be found on the valve. This same number also
appears on the actuator nameplate when the valve is shipped from the factory as part of a control valve assembly.
Refer to the serial number when contacting your
assistance. When ordering replacement parts, refer to the serial number and to the eleven‐character part number for
each part required from the following parts kit or parts list information.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Automation Solutions should
not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the
performance of the valve, and could cause personal injury and property damage.
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Emerson sales office or Local Business Partner for technical
Instruction Manual
D102175X012