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Air admittance valves (AAVs, or commonly referred to in the UK as Durgo valves and in the US as Studor vents and Sure-Vent®) are negative-pressure-activated, one-way mechanical valves, used in a plumbing or drainage venting system to eliminate the need for conventional pipe venting and roof penetrations.
In the United States, plumbing codes usually provide strict limitations on how far a trap may be located from the nearest vent stack. When a vent cannot be provided, an air admittance valve may be used instead. These devices avoid negative pressure in the drain pipe by venting room air into the drain pipe (behind the trap).
The New York City Department of Buildings (DOB) is the department of the New York City government that enforces the city's building codes and zoning regulations, issues building permits, licenses, registers and disciplines certain construction trades, responds to structural emergencies and inspects over 1,000,000 new and existing buildings.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Air_admittance_valve&oldid=309883018"
This is a list of airports in New York (a U.S. state), grouped by type and sorted by location.It contains all public-use and military airports in the state. Some private-use and former airports may be included where notable, such as airports that were previously public-use, those with commercial enplanements recorded by the FAA or airports assigned an IATA airport code.
New York City: Manhattan only; overlays with 212, 332, and 917 680: 2017: Syracuse, Utica, Watertown, and north central New York; overlay of 315 716: 1947 Buffalo, Dunkirk-Fredonia, Olean, Jamestown, Niagara Falls, Tonawanda and western New York; will be overlaid by 624 in 2024 718: 1984 New York City: all except Manhattan; overlays with 347 ...
It opened on October 7, 1933, as the new terminal of the Culver Line, which was known as the Smith Street Line or the South Brooklyn Line at the time. In 1954, this station ceased to be the line's terminal with the completion of the Culver Ramp, which connected the South Brooklyn Line and the Brooklyn–Manhattan Transit Corporation (BMT)'s ...
The Grant Avenue station is a station on the IND Fulton Street Line of the New York City Subway.Located at Grant Avenue just north of Pitkin Avenue in Cypress Hills [4] and City Line, Brooklyn, near the border between the boroughs of Brooklyn and Queens, [5] [6] it is served by the A train at all times.