www.Fisher.com
Fisher
™
Control‐Disk
™
Rotary Valve
Contents
Introduction
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Educational Services
2
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Packing Maintenance
8
. . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Seal Ring Assembly
12
. . . . . . . . . . . . .
Replacing the Disk, Shafts, or Bearings
12
. . . . . . . . .
Actuator Mounting
18
. . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Kits
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List
21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1. Fisher Control‐Disk Valve with 2052
Actuator and DVC6200 Digital Valve Controller
W9418-2
LUGGED STYLE
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for the Fisher Control‐Disk valve,
DN50 through DN300 or NPS 2 through NPS 12 (figure 1). Refer to separate instruction manuals for information
covering the power on‐off actuator and accessories.
Do not install, operate, or maintain a Control-Disk 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 Control‐Disk rotary valve offers excellent throttling performance. An equal percentage flow characteristic provides
an improved throttling range comparable to that of a segmented ball valve. This improved capability allows you to
control closer to the target set point, regardless of process disturbances, which results in a reduction in process
variability.
Retainer clips provide for versatility to mount and align the same wafer style valve body in different piping
configurations (ASME and EN ratings). The valve body is compatible with PN 10 through PN 40, CL150, and CL300
ratings. Face‐to‐face dimensions meet EN 558, API 609, and MSS‐SP68 standards.
The Control‐Disk rotary valve features an eccentrically‐mounted disk with either soft or metal seal, providing capability
for enhanced shutoff. The interchangeable sealing technology allows for the same valve body to accept both soft and
metal seals.
Instruction Manual
D103298X012
Control-Disk Valve
June 2017
