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Oatey Sure-Vent 1-1/2 in. PVC Air Admittance Valve 392305
$12.95
Oatey Sure-Vent 1-1/2 in. PVC Air Admittance Valve with 20 DFU Branch and 8 DFU Stack 39230
- For use as a secondary vent
- Complies to ASSE standard 1050 and 1051
- 1-size approved to handle up to 2 in. vent pipe
- Offers unmatched breathing capability with a unique sealing system
- Closes by gravity
Description
The purpose of an Air Admittance Valve is to provide a method of allowing air to enter the plumbing drainage system without the use of a vent extended to open air and to prevent sewer gases from escaping into a building. An Air Admittance Valve is a 1-way valve designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system. The device shall close by gravity and seal the vent terminal at zero differential pressure (no flow conditions) and under positive internal pressures.
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