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Fisher
™
EU and EW Valves NPS 12 through 24 x 20
Contents
Introduction 1.................................
Scope of Manual 1.............................
Educational Services 2.........................
Description 3.................................
Specifications 4...............................
Installation 4..................................
Maintenance 5................................
Packing Lubrication 8..........................
Packing Maintenance 8.........................
Replacing Packing 9........................
Trim Maintenance 12..........................
Trim Removal 12..........................
Lapping Seating Surfaces 13.................
Valve Plug Maintenance 13..................
Trim Replacement 15......................
Retrofit: Installing Bore Seal Trim 18..............
Replacement of Installed Bore Seal Trim 20........
Trim Removal (Bore Seal Constructions) 20....
Lapping Metal Seats
(Bore Seal Constructions) 21..............
Remachining Metal Seats
(Bore Seal Constructions) 21..............
Trim Replacement
(Bore Seal Constructions) 22..............
Parts Ordering 23...............................
Parts List 24...................................
Figure 1. NPS 24 x 20 Fisher EWT Valve with Piston
Actuator and FIELDVUE™ DVC6200 Digital Valve
Controller
W9156‐2
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 12 and 20 x 16 CL900 EUD, EUT-2, 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.
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 sales office
or
Local Business Partner before proceeding.
Instruction Manual
D102010X012
EU and EW Series Valves
July 2017
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