Table 25 (Continued)
Lubricate with lubricant stick.
M or Q
Operate all valves; check for corrosion and
foreign matter between plug and seat;
Inspect; dismantle if necessary; clean, wire
brush, re-machine plug and body or
replace if condition is beyond re-
Remove and replace whenever necessary.
Lubricate with grease.
Operate valve to prevent sticking; check
for leakage, adjust packing nut, and
replace packing if necessary.
Check valve closure for tight shutoff; if
valve does not hold, remove valve stem
and disk and regrind seat and disk.
Operate valve; check valve stem and
lubricate as necessary; check for tight
Check diaphragm for cracks; renew as
Operate inactive gates; lubricate stem
Clean valve with wire brush and paint with
Check seating wedges on valves seating
Test tightness of unit.