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Emerson Fisher EWT User Manual
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Instruction Manual
D100399X012
EW Valve
July 2017
38
Figure 21. Typical Fisher Bonnet with Single PTFE V‐Ring Packing Set
APPL
Y LUB
E0201
30A9425-A
35A3976-A
CU3911-C
42B3947-A
ENVIRO-SEAL
BELLOWS SEAL BONNET
STYLE 1 OR 2
EXTENSION BONNET
DETAIL OF NPS 12x8 CL900
YOKE BOSS BOLTING
DETAIL OF 5‐INCH (127 mm) YOKE
BOSS ACTUATOR BOLTING
PLAIN BONNET
37
39
Table of Contents
Table of Contents
1
Introduction
1
Scope of Manual
1
Description
3
Specifications
3
Educational Services
4
Installation
4
Inverted Globe Valve Applications (Actuator below Valve)
6
Maintenance
7
Packing Lubrication
8
Packing Maintenance
10
Replacing Packing
10
Trim Maintenance
14
Trim Removal
15
Lapping Metal Seats
16
Valve Plug Maintenance
17
Trim Replacement
19
Retrofit: Installing C-Seal Trim
20
Replacement of Installed C-Seal Trim
24
Trim Removal (C-Seal Constructions)
24
Lapping Metal Seats (C-Seal Constructions)
25
Remachining Metal Seats (C-Seal Constructions)
25
Trim Replacement (C-Seal Constructions)
26
ENVIRO-Sealt Bellows Seal Bonnet
27
Parts Ordering
32
Parts Kits
33
Parts List
36
D100399X012 July
47
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Emerson Fisher EWT Specifications
General
Brand
Emerson
Model
Fisher EWT
Category
Control Unit
Language
English
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