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DSV1000 Valve
June 2022
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.
7. When the valve is in operation, carefully examine the packing follower region for any signs of leakage.
Seal Ring Maintenance
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.
Valve Disassembly
Refer to figures 4, 5, and 6 to identify the DSV1000 valve components by key number.
Disassemble the valve only to the extent necessary to accomplish the needed inspection and repairs. For some repairs
complete disassembly of the valve is not necessary. Follow the disassembly procedures to the point necessary to
accomplish the repair, then skip to the appropriate assembly steps to complete the reassembly of the valve. Always
clean and protect sealing surfaces from damage.
Mark parts as necessary to allow them to be returned to the same position and orientation as removed. The tailpiece,
for instance, shall be returned to the same end of the valve from which it was removed. The seal assembly shall also be
returned to the same tailpiece and in the same orientation from which it was removed.
1. Isolate the valve from the line pressure, release pressure from both sides of the valve body, and drain the process
media from both sides of the valve. If using a power actuator, shut off all pressure lines to the power actuator,
release pressure from the actuator, and disconnect the pressure lines from the actuator. Use lockout/tagout
procedures to be sure that the above measures stay in effect while working on the equipment.
2. Remove line bolting, remove the valve from the pipeline, and clean all valve surfaces. Place the actuator/valve
assembly on a flat working surface.
8
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Instruction Manual
D104727X012
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