Difference between revisions of "Air gap (Water supply system)"
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Revision as of 11:12, 7 February 2017
The unobstructed vertical distance through the free atmosphere between the lowest opening of a water service pipe or fixed outlet supplying water to a fixture or receptacle and the highest possible water level of such fixture or receptacle.
References
1. AS/ NZS 3500.0:2003 Plumbing and Drainage
