Instruction Manual

Instruction Manual
D102178X012
V260 Valve
September 2012
4
Note
Standard Fisher V260 valve packings (key 105) are composed of:
D Conductive packing ring ( graphite ribbon packing), or
D Partially conductive packing rings (For example: a carbon-filled PTFE female adaptor wi th PTFE V-ring packing or a
graphite-composition packing ring with PTFE/composition packing ring)
In order to electrically bond the drive shaft to the valve body for hazardous area service, an alternate shaft-to-body bonding strap
canbeprovidedbyusingthefollowingstep.
Figure 2. Optional Shaft-to-Body Bonding Strap Assembly
VALVE BODY
ACTUATOR
A
A
VIEW A-A
37A6528-A
A3143-2
6. For hazardous applications, attach the optional bonding strap assembly (key 131) to the valve drive shaft (key 6)
with the clamp (key 130) and connect the other end of the bonding strap assembly to the valve body with the
mounting cap screw as shown in figure 2.
7. Connect pressure lines to the actuator as indicated in the actuator instruction manual. When an auxiliary manual
actuator is used with a power actuator, install a bypass valve on the power actuator (if one is not supplied) for use
during manual operation.
8. If the valve has ENVIRO-SEAL™ live-loaded packing installed, an initial re-adjustment may not be required,
depending on your application. See the Fisher instruction manual titled ENVIRO-SEAL Packing System for Rotary
Valves, D101643X012, for packing instructions and adjustments (see figure 3).
Maintenance
Valve parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection
and replacement depends upon the severity of service conditions.
Key numbers are shown in figure 6, unless otherwise noted.
WARNING
Avoid personal injury or equipment damage from sudden release of process pressure or uncontrolled movement of parts.
Before performing any maintenance operations: