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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.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Air_admittance_valve&oldid=309883018"
Air admittance valve, a valve in a drain-waste-vent system Aire d'attraction d'une ville , a metropolitan statistical area used by the French national statistics office INSEE Another Angry Voice , a British political blog
two valves per cylinder, 8 valves total, roller chain-driven single overhead camshaft (SOHC) aspiration hot-film air mass meter, cast alloy throttle body with electronically controlled Bosch "E-Gas" throttle valve; turbocharger with maximum pressure 1.6 bar (23.2 psi), water-cooled intercooler integrated into intake manifold fuel system
KBE – kelly bushing elevation (in meters above sea level, or meters above ground level) KBG – kelly bushing height above ground level; KBUG – kelly bushing underground (drilling up in coal mines, West Virginia, Baker & Taylor drilling) KCI – potassium chloride; KD – kelly down; KMW – kill mud weight
A simplified version of the definition is: The k v factor of a valve indicates "The water flow in m 3 /h, at a pressure drop across the valve of 1 kgf/cm 2 when the valve is completely open. The complete definition also says that the flow medium must have a density of 1000 kg/m 3 and a kinematic viscosity of 10 −6 m 2 /s, e.g. water. [clarify]
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