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T M 1 0 - 3 8 3 5 - 2 1 9 - 1 4
6-6. Gate Valve Assembly (Model ADC-1200 and 1461).
This task consists of
Repair
INITIAL SET-UP
Materials/Parts
Materials/Parts (cont)
Oil, Lubricating (Item 3, Appendix E)
Packing (Refer to TM10-3835-219-24P)
Solvent, Dry Cleaning (Item 7, Appendix E)
Gasket (Refer to TM10-3835-219-24P)
Rags, Wiping (Item 5, Appendix E)
R e p a i r. (figure 6-4)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
Remove nut (1) securing handwheel (2) and remove handwheel.
Remove packing nut (3), spring (4), and packing gland (5).
Remove and discard packing (6).
Remove eight capscrews (7) and Iockwashers (8).
Remove bonnet (9) from body (10).
Remove and discard gasket (11).
Remove valve stem (12), disc stem (13), two valve seats (14), and two discs (15) from body (10).
WARNING
Prior to the cleaning of any parts have an industrial hygienist or safety
personnel review the procedures and personal protective equipment to
be used in the cleaning operations.
Potential health hazards result from inhalation of petroleum solvent
vapors and from contact of solvent with skin. Use rubber gloves and
hand cream for protection, and work with adequate ventilation.
Dry cleaning solvent used to clean parts is potentially dangerous to
personnel and property. Avoid repeated and prolonged skin contact.
Do not use near open flame or excessive heat. Flash point of solvent is
100°F-138°F
(38°C-60°C).
Clean valve assembly components with dry cleaning solvent and dry thoroughly.
Inspect packing nut (3), replace if cracked or damaged.
Inspect components for damage. Replace worn or damaged components.
Install valve stem (12), disc stem (13), and two discs (15) into bonnet (9).
Install two valve seats (14) into body (10).
Change 1
6-11
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