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TM 10-4930-240-13
4-22. VALVE SECTION ASSEMBLY REPAIR - cont.
c.
Repair. Replace damaged or defective components.
d.
Assembly. Refer to figure 4-15.
(1) Apply thread sealant to male threads of male coupling half (6) and female coupling half (12).
CAUTIONS
To prevent premature failure of valve section assembly, gaskets certified for arctic
service must be installed. If a new dust cap or female coupling half has been
installed, remove and discard black gaskets supplied with the new components
and replace them with blue colored arctic service gaskets.
Ensure gasket is fully seated. In gasket seat of coupling/dust cap to prevent leaks
in assembled components.
(2) Install female coupling half (12) and male coupling half (6) on gate valve (13).
(3) Remove gate valve (13) from vise.
(4) Install gasket (11) in female coupling half (12).
(5) Connect dust plug (10) to female coupling half (12).
(6) Connect chain (9) and split rings (7 and 8).
(7) Install gasket (4) In dust cap (5).
(8) Connect dust cap (5) to male coupling half (6).
(9) Connect chain (3) and split rings (1 and 2).
4-45
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