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Fisher
r
EU and EW Valves
NPS 12 through 24 x 20
Contents
Introduction
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual
1
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Description
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
4
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Maintenance
6
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Packing Lubrication
7
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Packing Maintenance
8
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Replacing Packing
8
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Trim Maintenance
11
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Trim Removal
11
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Lapping Seating Surfaces
11
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Valve Plug Maintenance
12
. . . . . . . . . . . . . . . . .
Trim Replacement
12
. . . . . . . . . . . . . . . . . . . . . .
Retrofit: Installing Bore Seal Trim
17
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Replacement of Installed Bore Seal Trim
19
. . . .
Trim Removal (Bore Seal Constructions)
19
. . .
Lapping Metal Seats
(Bore Seal Constructions)
20
. . . . . . . . . . . . .
Remachining Metal Seats
(Bore Seal Constructions)
20
. . . . . . . . . . . . .
Trim Replacement
(Bore Seal Constructions)
20
. . . . . . . . . . . . .
Parts Ordering
21
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Parts List
22
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Introduction
Scope of Manual
This instruction manual includes installation and
maintenance information for NPS 12 through
24 x 20 CL150 through 600 Fisher EUD, EUT,
EUT-2, EWD, EWT, and EWT-2 valves, and the
NPS 16 and 20 x 16 CL900 EUD, EUT2, EWD, and
EWT-2 valves.
(Size designations such as NPS 20 x 16 are
end connection size x nominal trim size.)
Refer to separate manuals for instructions covering
the actuator and accessories.
W9156-1
Figure 1. NPS 24 x 20 Fisher EWT Valve with
Piston Actuator and FIELDVUE
t
DVC6020
Digital Valve Controller
Do not install, operate, or maintain an EUD, EUT,
EUT-2, EWD, EWT, or EWT-2 valve 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
Process Management sales office before
proceeding.
Instruction Manual
D102010X012
August 2010
EU and EW Series Valves
