Fisher GX - User Manual

www.Fisher.com
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

Fisher GX Specifications

General

Brand	Fisher
Model	GX
Category	Control Unit
Language	English

Summary

Product Overview and Specifications

Introduction, Scope, and Description

Overview of the GX control valve, manual scope, and product description.

Specifications and Educational Services

Technical specs and training info for the GX valve and actuator system.

Installation and Mounting

Valve Installation

Instructions for safely and correctly installing the GX control valve assembly.

FIELDVUE DVC2000 Controller Mounting

Guidance on mounting the FIELDVUE DVC2000 digital valve controller to the actuator.

Maintenance and Repair Procedures

General Maintenance and Safety

Safety warnings and general procedures before performing maintenance operations.

Actuator and Packing Maintenance

Procedures for maintaining the actuator and replacing valve packing.

Valve Trim and Bellows Maintenance

Instructions for maintaining valve trim, seat rings, and bellows.

Disassembly and Assembly Procedures

Steps for disassembling and reassembling valve trim and components.

Operation, Adjustment, and Controls

Handwheel Operation and Installation

Details on operating and installing the handwheel for manual control.

Travel Stop Operation and Setting

Procedures for operating and setting the travel stop for limit control.

Parts and Ordering

Parts Ordering Information

Guidance on how to order replacement parts for the GX system.

Parts List and Kits

Lists available parts kits and a comprehensive parts list.