Fisher® D and DA Valves0 pages

Instruction Manual

D and DA Valves

D100386X012

June 2014

Fisherr D and DA Valves
Contents

Figure 1. Fisher D Valve with 657 Actuator

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Educational Services . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ceramic Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Packing Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Packing Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 6
Replacing Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Trim Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Lapping Metal Seats . . . . . . . . . . . . . . . . . . . . . . 8
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Parts Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

W0232

Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for Fisher D and DA valves. Refer to
separate manuals for instructions covering the actuator, positioner, and accessories.
Do not install, operate, or maintain a D or DA 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.
Unless otherwise noted, all NACE references are to NACE MR0175-2002.

Description
The D globe-style (figure 1) and DA angle-style (figure 5) valves are single-port, metal-seated valves for high-pressure
applications.

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