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Fisher
™
EZ‐C, ET‐C, and EWT‐C Cryogenic
Sliding‐Stem Control Valves
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 1.................................
Specifications 2...............................
Educational Services 3.........................
Installation 3..................................
Maintenance 5.................................
Packing Maintenance 7.........................
Replacing Packing 7........................
Trim Maintenance 10..........................
EZ‐C Trim Disassembly 10...................
EZ‐C Trim Assembly 11.....................
ET‐C and EWT‐C Trim Disassembly 12.........
ET‐C and EWT‐C Valve Plug Maintenance 13....
ET‐C and EWT‐C Trim Assembly 14...........
Coining Soft Metal‐to‐Metal Seats 14.........
Parts Ordering 14...............................
Parts Kits 15...................................
Parts List 18...................................
Bonnet Parts 18...............................
EZ‐C Valve Body Parts 18.......................
ET‐C and EWT‐C Valve Body Parts 22..............
Figure 1. Typical Fisher Cryogenic Valve with
Extension Bonnet and 585C Series Actuator
W6370
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for Fisher EZ‐C, ET‐C and EWT‐C
valves (see figure 1). Refer to separate manuals for instructions covering the actuator and accessories.
Do not install, operate, or maintain EZ‐C, ET‐C or EWT‐C valves without being fully trained and qualified in valve,
actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is
important to carefully read, understand, and follow all the contents of this manual, including all safety cautions and
warnings. If you have any questions about these instructions, contact your Emerson sales office
or Local Business
Partner before proceeding.
Description
EZ‐C: globe‐style, single‐port, unbalanced valves with integral end connections, post guiding, metal‐to‐metal seating,
and quick‐change trim. They feature stainless steel construction materials and fabricated extension bonnets.
ET‐C and EWT‐C: metal‐to‐metal seated globe‐style, single‐port, cage‐guided, pressure‐balanced valves featuring
stainless steel construction materials and fabricated extension bonnets.
Instruction Manual
D102175X012
EZ-C, ET-C, and EWT-C Valves
July 2017
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