Fisher® EWN Series and EW-1 Series Valves0 pages

Instruction Manual

EWN and EW-1 Valves

D100400X012

July 2014

Fisherr EWN Series and EW-1 Series Valves
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Educational Services . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Packing Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Packing Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 6
Trim Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Lapping Seating Surfaces . . . . . . . . . . . . . . . . . . . . 11
Valve Plug Maintenance . . . . . . . . . . . . . . . . . . . . . 12
Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 1. Fisher EWNT-2 NPS 12 x 8 EWNT-2 Valve
with Typical Actuator

W3310

Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for Fisher NPS 8 x 6 and 12 x 8 EWN
Series and EW-1 Series valves (figure 1). Refer to separate manuals for instructions covering the actuator and
accessories.
Do not install, operate, or maintain an EWN or EW-1 Series 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.

Description
These single-port globe-style valves have cage guiding, threaded seat rings, metal-to-metal seating, and
push-down-to-close valve plug action. Additional details are given in tables 1 and 2.

Specifications
Typical specifications for these valves are shown in table 1. Some of the specifications for a given valve assembly as it
was shipped from the factory appear on the actuator nameplate if the valve is part of a complete control valve
assembly.

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