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Fisher
™
GX Control Valve and Actuator System
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 1.................................
Specifications 2...............................
Educational Services 2.........................
Valve Installation 2.............................
Maintenance 4.................................
Actuator Maintenance 5........................
FIELDVUEt DVC2000 Digital Valve
Controller Mounting 11......................
Packing Maintenance 12........................
Replacing Packing (Pneumatic Actuators) 13.......
Replacing Packing (Electric Actuators) 16.........
Valve Trim Maintenance 19.....................
Bellows Maintenance 24........................
Handwheel Operation 25........................
Travel Stop Operation 26........................
Parts Ordering 41...............................
Parts Kits 42...................................
Parts List 43...................................
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 sales office
or Local Business Partner 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
July 2017
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