Air lock (Plumbing and Drainage)
Revision as of 15:58, 9 February 2017 by Joceil.infante (talk | contribs)
(1) Airspace with doors separating a water closet or urinal apartment and an adjacent room.
(2) Air in a pipe, which stops the flow of liquid in a pumping or gravity circuit.
Reference
1. AS/ NZS 3500.0:2003 Plumbing and Drainage
