DeZURIK
VPB V-Port Ball Valves
D10324
Page 10
February 2016
Seat Replacement
(Continued)
d. Apply a light coat of grease to the edge of the seat that rests against the ball when
assembled.
e. Insert the seat (A16) into the retainer (A3). See Figure 2, detail "C."
9. Place the seat retainer gasket (A5) in the body.
10. Place the seat retainer (A3) in the valve body.
11. Apply a thread locking compound (removable type) to the retainer screw threads.
12. Tighten the retainer screws evenly (A4) to the following torque in Table B while allowing seat to
center on the closed ball.
Table B: Torques for Retainer Screws
Valve Size
Torque
in
mm
ft lbs
Nm
1 - 2
25 - 50
10 ±2
13 ±2
2½ - 4
60 - 100
12 ±2
16 ±2
6 & 8
150 & 200
16 ±2
22 ±2
10 - 14
250 - 350
40 ±3
54 ±4
16 - 20
400 - 500
80 ±5
108 ±7
13. The valve may now be installed in the pipeline as described in the
Installing Valve
section.
14. If the actuator is a powered actuator, reconnect power to the actuator.
