MIL-HDBK-1164
Table 25 (Continued)
Frequency (1),
Inspection
Action
(2)
Plug valves
Lubricate with lubricant stick.
M or Q
Operate all valves; check for corrosion and
Q
foreign matter between plug and seat;
lubricate gearing.
Inspect; dismantle if necessary; clean, wire
A
brush, re-machine plug and body or
replace if condition is beyond re-
machining.
Curb stops
Remove and replace whenever necessary.
V
Multiport valves
Lubricate with grease.
SA
Globe valves
Operate valve to prevent sticking; check
Q
for leakage, adjust packing nut, and
replace packing if necessary.
SA
Check valve closure for tight shutoff; if
valve does not hold, remove valve stem
and disk and regrind seat and disk.
Q
Diaphragm valves
Operate valve; check valve stem and
lubricate as necessary; check for tight
closing.
Check diaphragm for cracks; renew as
A
necessary.
Sluice gates
Operate inactive gates; lubricate stem
M
screws and gears.
Clean valve with wire brush and paint with
A
corrosion-protective paint.
Check seating wedges on valves seating
A
against pressure.
Backflow preventers
Test tightness of unit.
M
Reduced pressure
Power-operated
valves
136
Previous Page
