What is used to prevent contamination of a potable water system supplying a plumbing fixture such as a galley sink from a backup of sewage sanitary drains?
A
Check valves in the potable water supply lines delivering water to the galley sink.
B
Location of the potable water spigots above the rim of the galley sink.
C
Location of the potable water spigots below the rim of the galley sink.
D
A "P" trap in the drain line draining sewage waste from the galley sink.
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Question 1 / 205eccef9cbacbc34ba4d45727
Question 1 of 205eccef9cbacbc34ba4d45727
What is used to prevent contamination of a potable water system supplying a plumbing fixture such as a galley sink from a backup of sewage sanitary drains?
What is used to prevent contamination of a potable water system supplying a plumbing fixture such as a galley sink from a backup of sewage sanitary drains?