Air gap definition

Air gap means, for a water distribution system, the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood level rim of the receptacle.

Air gap means the unobstructed vertical distance through the free atmosphere between the lowest opening from which any pipe, valve or tap, supplies water to a tank or fitting or other device, and the overflow level thereof;

Air gap means a vertical, physical separation between a water supply and the overflow rim of a non-pressurized receiving vessel. An approved air-gap separation shall be at least twice the inside diameter of the water supply line, but in no case less than two inches (2"). Where a discharge line serves as receiver, the air-gap shall be at least twice the diameter of the discharge line, but not less than two (2") inches.

Examples of Air gap in a sentence

• Air gap separation to be approved shall be at least twice the diameter of the supply pipe, measured vertically above the top rim of the vessel, but in no case less than one inch.

• Unless otherwise agreed in writing, that scheme shall specify either:- Outer pane of glass - 10mm Air gap between panes - 12mm Inner pane of glass - 6 mm or, with secondary glazing with a - Outer pane of glass - 6mm Air gap between panes - 100mm Inner pane of glass - 6.4 mm There must be no trickle vents installed in any case.

• Air gap between hard and resilient material shall be not less than 3 mm (1/8 inch) nor more than 6 mm (1/4 inch).

• Air gap – The unobstructed vertical distance, through the free atmosphere, between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood-level rim of the receptacle, or the lowest opening from any waste outlet pipe and the flood-level rim of the receptacle.

• Air gap separations shall be inspected at the time of installation and at least monthly.

More Definitions of Air gap

Air gap means the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or outlet supplying fixture, or other device, and the flood level rim of the receptacle. The vertical physical separation shall be at least two times the inside diameter of the water inlet pipe above the flood rim level but shall not be less than one inch.

Air gap means the unobstructed vertical distance through the free atmosphere between the lowest opening from an inlet pipe and the flood-level rim of a receptacle or floor drain.

Air gap means a physical separation between the free flowing discharge end of a potable water supply pipeline and an open or non-pressure receiving vessel. An “approved air-gap” shall be at least double the diameter of the supply pipe measured vertically above the overflow rim of the vessel and shall be in no case less than 1 inch (2.54 cm). (Additional reference: ASME A112.1.2-1991 Air Gaps in Plumbing Systems)

Air gap is a means of backflow prevention utilizing the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture or other device and the flood level rim of said vessel. An approved air-gap shall be at least double the diameter of the supply pipe, measured vertically, above the top of the rim of the vessel; provided however, that in no case shall the air-gap be less than one inch.

Air gap means a physical separation measured vertically be- tween the lowest point of a free-flowing discharge end of a potable water supply pipeline and the overflow rim of an open or nonpressur- ized receiving vessel.

Air gap means the unobstructed vertical distance through air between the lowest point of the water supply outlet and the flood level rim of the fixture or device into which the outlet discharges;

Air gap means the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture or other device and the flood level rim of said vessel. An approved air gap shall be at least double the diameter of the supply pipe, measured vertically, above the top of the rim of the vessel, and in no case less than 1 inch. When an air gap is used at the service connection to prevent the contamination or pollution of the District potable water system, an emergency bypass shall be installed around the air gap system and an approved reduced pressure principle device shall be installed in the bypass system.