Instruction Manual
GX Valve and Actuator
D103175X012
August 2011
Fisherr GX Control Valve and Actuator System Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Valve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Actuator Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 4 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 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.
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