Emerson Fisher 8540, Instruction Manual

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Fisher
™
8540 Eccentric Disk
Butterfly Control Valve
Contents
Introduction 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valve Orientation 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Packing Maintenance 9 . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Ring Maintenance 11 . . . . . . . . . . . . . . . . . . . . . .
Disk, Drive Shaft and Bearing Maintenance 15 . . . . . .
Actuator Mounting 18 . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1. Fisher 8540 Butterfly Valve with Bettis RPE
Actuator and 3720 Positioner
X1846
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for the 8540 Eccentric Disk Butterfly
Control Valve (see figure 1). Refer to separate instruction manuals for information covering the actuator and
accessories.
Do not install, operate, or maintain 8540 valves 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 before proceeding.
Description
The seal design of the 8540 eccentric disk high performance butterfly valve provides excellent shutoff capability. This
valve has a square drive shaft end and soft seal rings for use in a wide variety of applications.
Instruction Manual
D104709X012
8540 Valve
September 2021