Instruction Manual
D104425X012
V280 Valve
August 2019
5
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Partially conductive packing rings (for example: a carbon-filled PTFE female adaptor with PTFE V-ring packing or a
graphite-composition packing ring with a PTFE/composition packing ring).
To electrically bond the drive shaft to the valve body for hazardous area service, an alternate shaft-to-body bonding strap can be
provided by using the follow step (see figure 2).
5. For hazardous area applications where redundant shaft-to-body grounding is preferred, attach the optional
bonding strap assembly (key 117) to the valve drive shaft (key 20) with the clamp (key 116) and connect the other
end of the bonding strap assembly to the valve body with the mounting cap screw (key 25) as shown in figure 2.
Figure 2. Optional Shaft‐to‐Body Bonding Strap Assembly
GH02761
VALVE BODY
VIEW A-A
ACTUATOR
A
A
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.
WARNING
Avoid personal injury or equipment damage from sudden release of process pressure or uncontrolled movement of parts.
Before performing any maintenance operations:
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Do not remove the actuator from the valve while the valve is still pressurized.
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Do not loosen any pressure retaining bolting while the valve is still pressurized. This includes the body-to-tailpiece nuts
(key 18), packing box housing nuts (key 21), packing nuts (key 101) or pipe plug (keys 26).
D
Avoid injury by keeping hands, tools, and other objects away from the ball while stroking the valve.
D
Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D
Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Check that the
actuator cannot suddenly open or close the valve.
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Vent the power actuator loading pressure and relieve any actuator spring precompression.
D
Use bypass valves or completely shut off the process to isolate the valve from process pressure, relieve any process
pressure from both sides of the valve body, and drain the process media from both sides of the valve.
