DeZURIK
Willamette AWWA Metal Seated Ball Valve
January 2022
Page 7
D12001
Maintenance
and Operation
(Continued)
8. Remove retaining ring (A21) from housing and retract o-ring retainer (A14).
9. Install new o-rings (A26, A27), re-insert o-ring retainer (A14) and retaining ring (A21) and re-install lever
(B20).
10. After lever (B20) is reinstalled, connect power to the actuator, and run crosshead (B15) back to closed
position. Make sure all mechanisms are in proper alignment.
11. Replace link pin cotters (if used) and be sure to bend over ends of pin.
12. Release adjusting screw (A16) just enough so the ball can turn freely and retighten sealing and locknut
(A29) on plug adjusting screw (A16).
Shaft Seal Replacement (Open Position)
See figure 1 and table 1 for basic valve assembly component identification. See figure 2 and table 2 for
basic torque unit component identification.
The valve can be packed in the open position using the following procedure:
Servicing the valve while the pipeline is under pressure can cause personal injury or
equipment damage. Relieve pipeline pressure before servicing the valve.
1. Relieve the pressure in the pipeline.
2. Drain oil, if any, from the torque unit housing (B02) and remove indicator (B11) and cover (B01).
3. Tighten up the plug adjusting screw (A16) by turning it ½ turn maximum, pushing the ball (A05) against
the thrust washers (A13).
4. Loosen the clamp bolts (B24) in lever (B20) and remove key, or dowel (B23).
5. Run crosshead (B15) down to closed position.
6. Remove link pin (B19).
7. Run crosshead (B15) back to top of stroke in order to get links (B14) out of way.
Accidental operation of power actuator can cause personal injury or equipment
damage. Disconnect and lock out power to actuator before servicing.
8. If the actuator is powered, disconnect and lock out the pneumatic, hydraulic, or electrical power to
prevent accidental operation of the actuator.
9. Remove lever (B20) from operating shaft (A06). Carefully de-burr sharp edges of dowel pin hole in
shaft (A06) and all other surfaces over which o-rings will pass during assembly and disassembly.
10. Remove retaining ring (A21) and o-ring retainer (A14) and install new o-rings (A26, A27) using same
procedure as described in
Shaft Seal Replacement (Closed Position).
11. Re-install lever (B20), connect power to the actuator, run crosshead (B15) back to closed position and
reconnect links (B14). Replace link pin cotter (if used) and be sure to bend over ends of pin.