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Fisher
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GX Control Valve and Actuator System
Contents
Introduction
1
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Scope of Manual
1
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Description
1
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Specifications
2
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Valve Installation
2
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Maintenance
4
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Actuator Maintenance
4
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FIELDVUE
t
DVC2000 Digital Valve
Controller Mounting
11
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Packing Maintenance
12
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Replacing Packing
13
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Valve Trim Maintenance
17
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Bellows Maintenance
21
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Handwheel Operation
22
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Travel Stop Operation
23
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Parts Ordering
37
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Parts Kits
38
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Parts List
39
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Figure 1. Fisher GX Control Valve, Actuator, and
FIELDVUE DVC2000 Digital Valve Controller
W8861
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for the Fisher GX control valve and
actuator system.
Do not install, operate, or maintain a GX 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
The GX is a compact, state‐of‐the‐art control valve and actuator system, designed to control a wide range of process
gases, vapors, and fluids.
The GX is rugged, reliable, and easy to select. It requires no actuator sizing ‐‐ the actuator selection is automatic once
the valve body construction is selected.
The GX meets the requirements of both EN and ASME standards. It is available with a complete accessory package,
including the FIELDVUE DVC2000 integrated digital valve controller.
Instruction Manual
D103175X012
GX Valve and Actuator
April 2011
