How does an Air Admittance Valve (Studor Vent) work?

Описание к видео How does an Air Admittance Valve (Studor Vent) work?

How an AAV works:
When a plumbing fixture is operated, negative pressure causes the AAV to open, allowing air to enter and equalize the pressure in the system. When the water flow stops, gravity closes the valve preventing sewer gas from escaping through the valve into the building. Pick yours up at: http://www.plumbingmall.com/Studor-Ai...

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