Maintenance - Emerson Fisher 8532 Instruction Manual

Instruction Manual
D101550X012
Figure 6. Optional Shaft‐to‐Valve Body Bonding Strap Assembly
Note
Standard PTFE packing is composed of a partially conductive carbon‐filled PTFE female adaptor with PTFE V‐ring packing. Standard
graphite packing is composed of all conductive graphite ribbon packing. Alternate shaft‐to‐valve body bonding is available for
hazardous service areas where the standard packing is not sufficient to bond the shaft to the valve (see the following step).
For oxygen service applications, provide alternate shaft‐to‐valve body bonding according to the following step.
4. Attach the bonding strap assembly (key 131, figure 6) to the shaft with the clamp (key 130, figure 6).
5. Connect the other end of the bonding strap assembly to the valve flange cap screws.
6. For more information, refer to the Packing Maintenance section below.

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 in this procedure are shown in figures 9 and 10 unless otherwise indicated.
WARNING
Avoid personal injury from sudden release of process pressure. Before performing any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
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. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
on both sides of the valve. Drain the process media from both sides of the valve.
37A6528‐A
A3143‐2
VIEW A‐A
ACTUATOR
VALVE BODY
A
A
8532 Valve
June 2017
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