Instruction Manual
D100423X012
V500 Valve
July 2017
7
1. Prepare to install the line bolts and nuts. For flangeless valves, consult figure 3 before installing the line bolts and
nuts. Figure 3 shows the line bolt clearances required when installing flangeless valves.
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 rings. 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).
2. For hazardous applications, attach the bonding strap assembly (key 131) to the shaft with the clamp (key 130) and
connect the other end of bonding strap assembly to the valve body with the cap screw (key 25). See figure 4.
For all valve bodies, install the line bolts and nuts; then, tighten them using accepted bolting procedures. These
procedures include, but are not limited to, lubricating the line bolts and hex nuts and tightening the nuts in a crisscross
sequence to ensure proper gasket load.
3. If a purge is desired for the purged bearing construction, remove the pipe plugs (keys 29 and 24) and install the
purge lines. Purge pressure should be greater than the pressure within the valve and the purge fluid should be as
clean as possible.
4. Connect pressure lines to the actuator as indicated in the actuator instruction manual. When a manual actuator is
used with a power actuator, install a bypass valve on the power actuator (if not already supplied) for use during
manual operation.
WARNING
Personal injury could result from packing leakage. Valve packing was tightened before shipment; however, the packing
might require some readjustment to meet specific service conditions. Check with your process or safety engineer for any
other hazards that may be present from exposure to process media.
If the valve has ENVIRO‐SEALt live‐loaded packing installed readjustment will probably not be required. See the
Emerson Automation Solutions instruction manual entitled ENVIRO‐SEAL Packing System for Rotary Valves
(D101643X012
) for packing instructions. If you wish to convert your present packing arrangement to ENVIRO‐SEAL
packing, refer to the retrofit kits listed in the Parts Kit section later in this manual.
Maintenance
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. 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
from both sides of the valve. Drain the process media from both sides of the valve.
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