Emerson Fisher EZ-C User Manual

www.Fisher.com
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

Emerson Fisher EZ-C Specifications

General

Manufacturer	Emerson
Product Type	Control Unit
Operating Temperature	-40 to 85°C (-40 to 185°F)
Communication Protocol	HART
Input Signal	4-20 mA
Enclosure Rating	IP66
Model	Fisher™ EZ-C Controller

Summary

Introduction

Scope of Manual

Defines the scope of the manual for EZ-C, ET-C, and EWT-C valves.

Description

Provides details on the EZ-C, ET-C, and EWT-C valve types and features.

Specifications

Valve Sizes and Connections

Lists available valve sizes and end connection styles for the valves.

Pressure and Temperature Limits

Specifies maximum inlet pressure and material temperature capabilities.

Flow and Shutoff Characteristics

Details flow characteristics and shutoff classifications for the valves.

Approximate Weights

Provides the approximate weights for various valve sizes.

Educational Services

Installation

Maintenance

Packing Maintenance and Replacement

Covers maintenance and procedures for valve packing.

Trim Maintenance

EZ-C Trim Disassembly

Steps for disassembling the trim components of EZ-C valves.

EZ-C Trim Assembly

Steps for reassembling the trim components of EZ-C valves.

ET-C and EWT-C Trim Disassembly

Steps for disassembling the trim components of ET-C and EWT-C valves.

ET-C and EWT-C Valve Plug Maintenance

Procedures for maintaining the valve plug in ET-C and EWT-C valves.

Coining Soft Metal-to-Metal Seats

Instructions for seating soft metal-to-metal valve seats.

Parts Ordering

Parts Kits

Gasket Kits

Details of gasket kits for EZ-C and ET-C/EWT-C valves.

Packing Kits

Information on standard packing kits and ENVIRO-SEAL retrofit kits.

ENVIRO-SEAL Packing Retrofit Kits

Details on kits to convert valves to ENVIRO-SEAL packing.

ENVIRO-SEAL Packing Repair Kits

Extension Bonnet Assembly Parts

Parts List

Bonnet Parts

Lists parts related to the extension bonnet assembly.

EZ-C Valve Body Parts

Lists parts specific to the EZ-C valve body.

ET-C and EWT-C Valve Body Parts