Difference between revisions of "Air gap (Sanitary plumbing system)"
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Latest revision as of 11:11, 7 February 2017
The unobstructed vertical distance through the free atmosphere between the outlet of a discharge or waste pipe and the overflow level of the receptacle into which it is discharging.
References
1. AS/ NZS 3500.0:2003 Plumbing and Drainage
