TM 10-4610-241-24
TO 40W4-13-42
2-24.
GATE VALVES AND FITTINGS REPAIR .
This task consists of:
a.
Disassembly
b.
Cleaning
c.
Inspection
d.
Repair
e.
Assembly
INITIAL SET-UP :
Material/Parts Required
Detergent (Appendix C, Section II, Item 5)
Rags, Wiping (Appendix C, Section II, Item 14)
Packing (TM 10-4610-241-24P)
Equipment Condition
Reference
Valves and Fittings removed from System( TM 10-4610-241-10).
NOTE
The following procedures describe typical gate valves and fittings used with the
distribution, backwash and raw water systems. These components are supplied as
accessory items and their use and location may vary depending on operational
requirements.
GATE VALVES
a.
Disassembly.
(1)
Remove nut (1), washer (2), and hand wheel (3) from stem (7).
(2)
Remove packing nut (4), gland (5), and packing (6).
b.
Cleaning.
(1)
Wash all components with clean water and detergent.
(2)
Rinse components in clean water and dry with wiping rags.
c.
Inspection.
(1)
Inspect stem (7) and body (8) for damaged threads.
(2)
Inspect body (8) for cracks and corrosion.
d.
Repair.
(1)
Replace packing (6).
(2)
If body (8) or stem (7) is cracked, corroded, or damaged, replace gate valve.
(3)
Replace other parts if unserviceable.
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