Fisher EUT-2 User Manual

www.Fisher.com
Fisherr EU and EW Valves
NPS 12 through 24 x 20
Contents
Introduction 1...............................
Scope of Manual 1..........................
Description 3...............................
Specifications 4............................
Installation 4................................
Maintenance 6.............................
Packing Lubrication 7.......................
Packing Maintenance 8......................
Replacing Packing 8.......................
Trim Maintenance 11........................
Trim Removal 11..........................
Lapping Seating Surfaces 11................
Valve Plug Maintenance 12.................
Trim Replacement 12......................
Retrofit: Installing Bore Seal Trim 17...........
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............................
Parts List 22................................
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, 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.
W9156-1
Figure 1. NPS 24 x 20 Fisher EWT Valve with
Piston Actuator and FIELDVUEt 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

Fisher EUT-2 Specifications

General

Brand	Fisher
Model	EUT-2
Category	Control Unit
Language	English

Summary

General Installation Safety and Preparation

General Installation Safety Warnings

Provides critical warnings for installation to prevent personal injury or property damage.

Valve Configuration and Material Caution

Installation Procedures and Considerations

Valve Handling and Pre-Installation Checks

Instructions on safely hoisting, handling, and preparing the valve before installation.

Actuator and Packing Safety Notes

Maintenance Overview and Safety

General Maintenance Safety Precautions

Lists essential safety precautions before performing any maintenance operations.

Valve and System Isolation Procedures

Details procedures for isolating the valve, relieving pressure, and using lock-out measures.

Process Media Safety and Packing Notes

Packing Lubrication Procedures

Packing Maintenance and Replacement

Troubleshooting Packing Leakage

Stem and Packing Box Surface Inspection

Replacing Packing - Part 1

Covers initial isolation, bonnet removal, and loosening packing nuts.

Replacing Packing - Part 2

Bonnet, Gasket, and Valve Plug Handling

Procedures for handling the bonnet, replacing gaskets, and removing the valve plug.

Bonnet Removal Safety Warning

Warning regarding uncontrolled bonnet movement and safe removal of stuck bonnets.

Packing Replacement Steps and Assembly

Cage, Packing, and Stem Inspection

Gasket, Bonnet, and Packing Installation

Trim Maintenance: Removal and Lapping

Trim Removal Procedures

Detailed steps for removing trim components like cage, seat ring, and valve plug.

Lapping and Remachining Seat Surfaces

Valve Plug and Trim Replacement

Valve Plug Seal and Stem Maintenance

Seat Ring and Trim Component Installation

Guidance on installing seat rings for EUT-2/EWT-2 valves and other trim parts.

Seat Ring and Cage Installation

EUD/EWD Seat Ring and Cage Installation

Installing Bore Seal Trim (Retrofit)

Bore Seal Trim Preparation and Assembly

Replacing Installed Bore Seal Trim

Bore Seal Trim Removal Procedures

Steps for removing Bore Seal trim components, including drilling staked threads and prying piston rings.

Bore Seal Trim Removal and Maintenance

Retainer and Bore Seal Removal

Seat Surface Lapping and Machining

Bore Seal Trim Replacement Preparation

Bore Seal Trim Installation and Seating

Seal Orientation and Component Assembly

Seating Force and Actuator Alignment

Caution on achieving proper seating force and aligning actuator travel indicators.

Ordering Replacement Parts

Genuine Parts and Product Responsibility

Emphasizes using genuine parts and clarifies product selection and maintenance responsibility.