D102178X012
Design V260 Rotary Pipeline Ball Valve
Contents
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications Table 2. . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Packing Maintenance 4. . . . . . . . . . . . . . . . . . . . . . . .
Stopping Leakage 4. . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Packing 4. . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Ring Maintenance
Disassembly 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Mounting 9. . . . . . . . . . . . . . . . . . . . . . . .
Determining Mounting Position 9. . . . . . . . . . . . . . . .
Determining Closed Position 9. . . . . . . . . . . . . . . . . .
Parts Ordering 11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
Scope of Manual
This instruction manual provides installation, opera-
tion, maintenance, and parts information for the De-
sign V260 control valve. Refer to separate manuals
for information concerning the actuator, positioner, and
accessories (see figure 1).
Only personnel qualified through training or experience
should install, operate, and maintain Design V260
valves. If you have any questions about these instruc-
tions, contact your Fisher Controls sales office or sales
representative before proceeding.
Figure 1. Type V260 Sectional View
W6365-2/IL
Description
The Design V260 throttling ball valves are available in
single-seal, double block-and-bleed, dual-seal, and
bidirectional flow constructions with or without attenua-
tors. Valves with dome-style attenuators combine the
efficiency of a rotary valve with the noise reducing ca-
pability of a special trim (figure 4). Valves without at-
tenuators present little or no restriction to flow at full
travel.
Instruction Manual
Form 5374
March 2000
Design V260
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