
DeZURIK
D10322
Page 26
November 2020
Valve Disassembly
Refer to Figure 1 (page 6) for component identification.
Pipeline pressure can cause personal injury or equipment damage. Relieve the
pressure in the pipeline before removing flange bolts and flanges.
1. Relieve the pressure in the pipeline, drain the pipeline and close the valve.
Accidental operation of powered actuator can cause personal injury or equipment
damage. Disconnect and lock out power to actuator before servicing.
2. If the actuator is powered, disconnect and lock out the power to the actuator.
3. Support the valve, remove the flange bolts and remove the valve from the pipeline.
Note:
Lifting the valve incorrectly can damage it. Do not fasten lifting devices to the actuator or
disc, or through the seat opening in the body. Lift the valve with slings fastened around the
valve body, or attach them to bolts or rods run through holes for the pipeline flanges.
4. Remove the actuator and the actuator bracket from the valve.
5. Remove pin (A46) from valve shaft (A4) (does not apply to valves with stepped shafts).
6. Remove the two gland nuts (A15) and remove the gland (A12).
Note:
Live-loaded packing options include a flat washer (A37) and several spring washers (A36)
under each gland nut. When required, the gland consists of a two-piece gland (A12) and gland
plate (A39).
7. Remove all of the packing (A11).
8. If the valve has the dual-packing option, remove the secondary packing chamber (A17) and the
gasket (A16) and remove all of the secondary packing
—do not re-use removed packing.
9. Remove all packing fragments, dirt and other contaminants from all packing sealing surfaces.
10. Remove the seat retainer screws (A23), the seat retainer (A20) and all of the seat components.
Note:
The seat retainer on valve sizes 14" and larger has two tapped holes. Screws may be
threaded into these holes to remove the seat retainer.
11. On Class 150 valve sizes 2
–18" (50–450mm) and Class 300 valve sizes 2–16" (50–400mm),
remove the pipe plug (A9) from the bottom of the body.