Instruction Manual
D104297X012
V270 Valve
September 2018
8
WARNING
D
See the WARNING at the beginning of the Maintenance
section for more information before removing the valve from
the pipeline.
D
Use proper lifting and rigging practices while moving the valve or valve/actuator assembly.
2. Remove line bolting, remove the control valve from the pipeline, and place the actuator/valve assembly on a flat
surface.
3. To assist with future reassembly, note and mark the orientation of the actuator with respect to the valve body and
the coupler orientation with respect to the valve drive shaft.
4. Refer to the appropriate actuator instruction manual for info on removal.
5. Remove the actuator mounting screws, bolts, or nuts while properly supporting the actuator then separate the
actuator and mounting bracket from the valve.
6. If necessary, remove the bonding strap assembly, shown in figure 2, from the valve before removing the packing
parts.
7. Remove the packing follower nuts, packing flange, and spring pack and packing follower (keys 36, 37, and 38).
8. Remove the packing parts:
a.
If the packing box housing (key 6) 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 housing. Do not scratch the drive shaft or packing
gland bore. Scratching these surfaces could cause leakage. Clean, inspect, and obtain replacement parts as
necessary for reassembly. Examine the drive shaft and packing gland bore for any signs of damage that may
prevent proper sealing.
b.
If the packing box housing is separated from the valve (refer to Seal Ring Maintenance section of this manual for
disassembly instructions):
Remove the drive shaft (key 4) from the packing box housing. With the drive shaft
removed, remove all internal packing parts. Clean, inspect, and obtain replacement parts as necessary for
reassembly. Examine the drive shaft and packing gland bore for any signs of damage that may prevent proper
sealing.
Packing Assembly
For additional information on the live-loaded packing system refer to the ENVIRO-SEAL Packing System Instruction
Manual (
D101643X012
).
1. If the packing housing box (key 6) is removed from the valve, use the valve assembly steps to reinstall the drive
shaft (key 4) and packing box housing assembly on the valve. (Refer to Seal Ring Maintenance section of this manual
for additional assembly instructions).
2. Place the new packing components over the drive shaft and slide each into the packing box housing until properly
seated at the bottom of the packing gland. Use the parts sequence shown in figure 3 and verify the Belleville
springs are in the correct configuration
.
3. Secure the spring pack and packing follower assembly and packing flange with the packing nuts (keys 38, 37, and
36).
4. Tighten the packing flange nuts alternately and evenly, keeping the packing flange parallel with the valve flange
(see figure 3), until the Belleville springs are compressed 100% (or completely flat).
a. For PTFE packing, loosen each packing flange nut one half turn (180
_
of rotation).
5. If necessary, install the bonding strap assembly shown in figure 2.
6. 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.
