MIL-HDBK-1164
Table 25
Maintenance Checklist for Valves and Accessories
Frequency (1),
Inspection
Action
(2)
Manually operated
valves
Gate valves
Locate, check operation, lubricate stem
SA
Distribution
packing; if packing leaks, dig up valve
system valves
and tighten packing gland or replace
packing; check stem alignment; check
for broken stem or stripped stem or
chewed nut.
SA
Valve bypass
Check for position, inspect, and
lubricate.
Check and lubricate; correct any
SA
deficiencies.
Vault
Check condition, clean, check masonry;
SA
make repairs as necessary.
Treatment plant valves
Operate inactive valves.
Q
Lubricate as required (including gears).
A
V
Replace or resurface leaking valve
seats.
Lubricate chain wheels.
Q
Butterfly valves
Check valve stem for watertightness,
SA
and adjust, if necessary.
A
Check operation and inspect for tight
closure.
Rotary valves
Operate; lubricate metal-to-metal
M
Cone valves (and ball
contacts in pilot mechanism; lubricate
valves)
packing glands; lubricate all parts of
seating and rotating mechanisms.
Dismantle, remove corrosion products,
A
wire brush plug and valve body; paint
valves with corrosion-resistant paints.
135
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