Fisher® CVX Steam Conditioning Valve0 pages

Instruction Manual

CVX Valve

D103606X012

July 2014

Fisherr CVX Steam Conditioning Valve
Contents

Figure 1. Fisher CVX Steam Conditioning Valve

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Educational Services . . . . . . . . . . . . . . . . . . . . . . . . . 3
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Removal of Valve Bonnet and Trim . . . . . . . . . . . . . 8
Nozzle Maintenance and Replacement . . . . . . . . . 10
Valve Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and operation information for the Fisher CVX control valve.
Refer to separate instruction manuals for instructions covering the actuator and accessories.
Do not install, operate, or maintain a CVX 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 CVX Steam Conditioning Valve (see figure 1) provides a convenient and efficient way to reduce steam pressure
and temperature within a single device. Typical installations include steam backpressure control, turbine bypass,
boiler start-up service, auxiliary steam letdown for drying rolls, kettles, equipment drives, plant heating, and other
loads requiring dependable and accurate control of steam pressure and temperature.

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