www.Fisher.com
D102175X012
Design EZ-C, ET-C, and EWT-C Cryogenic
Sliding-Stem Control Valves
Contents
Introduction
1
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Scope of Manual
1
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Description
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
4
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Packing Maintenance
5
. . . . . . . . . . . . . . . . . . . . .
Replacing Packing
6
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Trim Maintenance
8
. . . . . . . . . . . . . . . . . . . . . . . .
Design EZ-C Trim Disassembly
8
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Design EZ-C Trim Assembly
9
. . . . . . . . . . . . . .
Design ET-C and EWT-C Trim Disassembly 10
Design ET-C and EWT-C Valve Plug
Maintenance
11
. . . . . . . . . . . . . . . . . . . . . . . . .
Design ET-C and EWT-C Trim Assembly
11
. .
Coining Soft Metal-to-Metal Seats
11
. . . . . . . .
Parts Ordering
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Kits
13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List
16
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Bonnet Parts
16
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Design EZ-C Valve Body Parts
17
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Design ET-C and EWT-C Valve Body Parts
21
.
Introduction
Scope of Manual
This instruction manual includes installation,
maintenance, and parts information for Design EZ-C,
ET-C and EWT-C valves (see figure 1). Refer to
separate manuals for instructions covering the
actuator and accessories.
No person may install, operate, or maintain Design
EZ-C, ET-C and EWT-C valves without first
D
being
fully trained and qualified in valve, actuator, and
accessory installation, operation, and maintenance,
and
D
carefully reading and understanding the
contents of this manual. If you have any questions
about these instructions, contact your Emerson
Process Management
t
sales office before
proceeding.
Figure 1. Typical Cryogenic Valve with Extension
Bonnet and 585C Series Actuator
W6370/IL
Note
Neither Emerson
r
, Emerson Process
Management, Fisher
r
, nor any of their
affiliated entities assumes
responsibility for the selection, use
and maintenance of any product.
Responsibility for the selection, use,
and maintenance of any product
remains with the purchaser and
end-user.
Description
Design 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.
Designs 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
Form 5376
August 2006
EZ-C, ET-C, and EWT-C Valves