What is 'air gap' 🧑‍🔧

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A gap or an equivalent filler of nonmagnetic material across the core of a choke, transformer, or other magnetic device. Also: A spark gap consisting of two electrodes separated by air. Also: The space between the stator and rotor in a motor or generator. Also: The distance between two components or parts. Also: In plastic extrusion coating, the distance from the opening of the extrusion die to the nip formed by the pressure and chill rolls. Also: The unobstructed vertical distance between the lowest opening of a faucet (or the like) which supplies a plumbing fixture (such as a tank or washbowl) and the level at which the fixture will overflow.

This is a common term used to identify a technique for preventing backflow through a pipe.

The actual application is simply an ‘air gap’ between the end of one pipe, and the start of another.

The use of an ‘air gap’ negates any concern of siphoning, due to the space created by the ‘air gap’.

This technique is common in mechanical spaces and is normally located over a floor drain which is positioned by the mechanical engineer to accept any water that may leak from the system.

Do you know what makes people curious? Here are a few questions and answers:

Air gap

What is an air gap on a rig...

The clearance between the highest water surface that occurs during the extreme metocean conditions and the underside of the cellar deck.

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