DeZURIK
VPB V-Port Ball Valves
February 2016
Page 13
D10324
Valve Reassembly
(Continued)
13. Place the packing washer (A11) onto the upper shaft, and slide the washer into position in the
packing chamber, against the shoulder on the upper shaft (A6).
14. Place the packing rings (A10) onto the upper shaft (A6) and slide the rings into position in the
packing chamber.
Note:
If Graphoil Packing Option G2 (A10) is used, lubricate the inside and outside diameters of
each packing ring with Krytox 240 AC lubricant (1068502).
15. Place the gland (A9) in position over the upper shaft (A6) and packing rings (A10), and replace
the gland nuts (A8). Tighten the gland nuts finger tight, plus 1/2 turn.
16. Apply a light coat of media compatible, anti-seize compound to the setscrew (A13).
17. With the ball in the open position, install the setscrew (A13) into the ball upper hub, and tighten
to the torque specified in Table C:
Table C: Torques for Setscrews
Valve Size
Torque
in
mm
ft lbs
Nm
1 - 2
25 - 50
6 ±1
8 ±1
2½" - 4
60 - 100
10 ±2
13 ±2
6
150
12 ±2
16 ±2
8
200
16 ±2
22 ±2
10 - 20
250 - 500
18 ±2
24 ±2
18. Stake the set screw in the ball hub to secure it in place.
19. Replace the seat and seat retainer as described in steps 7 thru 11 in the
Seat Replacement
section.
20. Mount the adaptor (P2) on the body (A1) with screws (A27). See Table D for mounting screw
torques:
Table D: Torques for Mounting Screws
Valve Size
Torque
in
mm
ft lbs
Nm
1 - 2
25 - 50
12 ±2
16 ±2
2½" - 4
60 - 100
12 ±2
16 ±2
6 & 8
150 & 200
40 ±3
54 ±4
10 - 14
250 - 350
80 ±5
108 ±7
16 - 20
400 - 500
100 ±5
136 ±7
21. Mount the actuator on the valve as described in the Actuator Instructions.
22. Install the valve in the pipeline as described in the
Installing Valve
section.
23. If the actuator is a powered actuator, reconnect power to the actuator.
24. The pipeline may now be pressurized. Once pressurized, verify that the valve is sealing properly.
a. If seat leakage occurs, adjust the closed position stop until seat leakage stops.
b. If packing leakage occurs, tighten the gland nuts (A8) evenly and slowly, just enough to stop
leakage.
