MIL-HDBK-1164
Table 25 (Continued)
Frequency (1),
Inspection
Action
(2)
Valve operator pilot Check control through one full cycle of
M
controls
operation.
Lubricate pins, linkage, packing glands,
M
and adjustment rod threads as necessary;
remove corrosion products; check for
leakage and repair.
Disassemble; inspect unit and clean
A
strainers; examine diaphragm for failure;
regrind or replace worn valve seats.
Automatic valves
A
Air-release valves,
Remove valve from service; inspect float
valve unit.
for leaks, and pins and linkage for
corrosion; remove corrosion products;
clean orifices.
Vault
Inspect for condition of masonry, steps,
A
and manhole covers; repair as necessary.
Altitude valves
Inspect and lubricate.
M
Pilot controls
A
Valve unit and
Disassemble; inspect hydraulic cylinder
operator
and repair; inspect valve, repair, and paint,
as necessary.
A
Check valves
Inspect the closure control mechanism (if
any); clean and adjust as necessary;
check pin wear if balanced disk type;
check seating on ball type.
Disassemble; clean, reseat, and repair as
V
necessary.
Float valves
Inspect float; repair as necessary.
M
Inspect valve and valve operating
A
mechanism.
138
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