AVK SEriES 57/46 & 57/86 rESiliEnt SEAtEd gAtE VAlVES
inStAllAtion, opErAtion & mAintEnAncE mAnuAl
4.2 replacement of Stem o-rings (13)
WArning:
To perform the following steps, be sure the water main supply line has been shut off, and that the pressure has
been bled off! Also provide sufficient clearing around the valve so that no soil or debris may fall into it.
a) Remove the two upper gland follower / yoke nuts (16) and washers (14). Lift the gland follower (17) up off of the stud bolts
(19).
b) Lift the gland (15) to access the three stem seal O-rings (13).
notE:
These O-rings are split-type O-rings. When replacing
them, ensure that the splits
do not
align. Rotate the splits at approximately 90 degree intervals.
c) Reverse steps a) and b) for re-assembly.
Repressurise the system. At this time, if there is a leak around the gland be sure that the upper gland follower / yoke nuts
are screwed down evenly on the stud bolts. Tighten the nuts ¼ turn each until the leak stops.
component list
1. Valve body
2. Wedge body
3. Wedge
4. Wedge nut
5. Pin
6. Stem
7. Bonnet bolt
8. Bonnet gasket
9. Valve bonnet
10. Hot melt
11. Gland bushing
12. O-ring
13. O-ring
14. Washer
15. Gland
16. Hexagon nut
17. Gland follower
18. Yoke
19. Stud bolt
20. Washer
21. Handwheel
22. Stem nut
21
20
19
18
17
16
15
13
12
11
10
9
8
7
6
5
4
3
2
1
14
22
AVK Valves Pty Ltd, 559A Grand Junction Road, Wingfield, SA 5013, Australia - T: +61 8 8368 0900 - E: [email protected] - W: www.avkcivil.com.au Version number 3
COPYRIGHT©AVK GROUP A/S 2017
pp. 6 of 6
