Ads
related to: air admittance vent for toiletsupplyhouse.com has been visited by 100K+ users in the past month
build.com has been visited by 100K+ users in the past month
amazon.com has been visited by 1M+ users in the past month
Search results
Results From The WOW.Com Content Network
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.
The "Venting to atmosphere" section is great! Of course, diagrams and picutres would make it even better... But the "Air admittance valve" section does not make sense -- if it only allows gases in, not out, how does it prevent back-pressure when a toilet flushes?69.87.193.156 13:05, 6 September 2006 (UTC) It doesn't.
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).
An atmospheric vacuum breaker consists of a check valve and an air vent. The devices allow air into the system to prevent a siphon at the point of use. Hose connection vacuum breakers are installed on faucets and hose bibbs to prevent backflow into the water supply.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Air_admittance_valve&oldid=309883018"
Image credits: Google Maps The pair reportedly tied bedsheets together, attached the 23-year-old’s sperm in plastic wrap and sent it through the vents and into Daisy’s cells.