Seal Ring Maintenance; Disassembly - Emerson Fisher V260 Instruction Manual

V260 Valve
a. If the packing housing (key 16) is mounted
on the valve: Use a formed wire hook with a
sharp end to pierce the packing rings, and pull
the rings out of the packing box. Do not scratch
the drive shaft or packing box wall. Scratching
these surfaces could cause leakage. Clean,
inspect, and obtain replacement parts as
necessary for reassembly.
b. If the packing housing is removed from the
valve: Remove the drive shaft (key 20) from the
packing housing. With the drive shaft removed,
remove all internal parts. Clean, inspect, and
obtain replacement parts as necessary for
reassembly.
The packing sets (key 105) listed in the parts list do
not include any metal parts. Either clean and reuse
metal packing parts or obtain replacements by
ordering them individually.
Assembly
If the valve is equipped with the ENVIRO-SEAL
packing system, refer to the ENVIRO-SEAL Packing
System Rotary Valves instruction manual for
assembly.
1. If the packing housing assembly (key16) is
removed from the valve, use the valve assembly
steps to reinstall the drive shaft (key 20) and packing
housing assembly on the valve.
6
Figure 3. Packing Arrangement Details
2. For standard packing arrangements, install the
new packing parts using the parts sequence shown
in figure 3.
3. Secure the packing follower and packing flange
with the packing nuts (keys 114, 102, and 101).
Tighten the nuts far enough to stop leakage during
operating conditions.
4. If necessary, install the bonding strap assembly
shown in figure 2.
5. Use the steps provided in the Actuator Mounting
section to install the actuator on the valve. For
actuator travel adjustments, refer to the appropriate
actuator instruction manual.
6. When the control valve is installed in the pipeline
and in operation, check around the packing follower
for leakage and retighten the packing nuts as
necessary.

Seal Ring Maintenance

Disassembly

Instruction Manual
WARNING
For valves with dual-seals, fluid and/or
a hazardous material may be trapped
under pressure in the valve body
cavity. To avoid personal injury,
relieve the pressure, and drain any
remaining fluid or hazardous material
May 2010