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TABLE 6-1
(Cont'd)
Item
Problem
Cause
Action
Aluminum fittings (Cont'd)
Leak (Cont'd)
Porous casting
Replace
Broken or cracked
Replace.
Leak at flange
Failed gasket
Replace.
Loose flange bolts
Tighten bolts.
Scored flange face
1. Replace.
2. Replace gasket Face or
build up and reface.
Reissue.
Leak at flange
Distorted flange
Replace.
Leak at coupling
Faulty coupling, gasket
(See pipe couplings above.)
Not closed
Close.
Aluminum gate valves
Leak at gland
Loose packing
Tighten gland nut.
Slightly worn packing
Tighten gland nut.
Worn packing
Add packing and tighten
gland nut. (Depressure
first.)
Badly worn packing
Replace packing and tighten
gland nut. (Depressure
first.)
6-26
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