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 TM 55-1905-219-14-11
5-137. HVAC DUCTING - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
REPAIR OR REPLACE (Cont)
e. Watertight
Repair or replace.
closure
(5)
f.
1800
Repair or replace.
return
bend (6)
g. Steel pipe
Repair or replace.
(7)
h. Butterfly
Repair or replace.
valve (8)
i.
90elbow
Repair or replace.
(9)
j.
90range
Repair or replace.
turn (10)
k.
6 inch
Repair or replace.
slip on
flange
(11)
l.
Butterfly
Repair or replace.
valve
(12)
m. Terminal
Repair or replace.
(13)
n. 6 inch
Repair or replace.
access
cover
(14)
o. Steel pipe
Repair or replace.
(15)
p. 8 inch
Repair or replace.
90elbow
(16)
5-1398
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