Air Admittance Valves - LSP Products https://www.lspproducts.com/product-category/specialty-products/air-admittance-valves/ Wed, 27 Mar 2024 20:33:03 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.4 Air Admittance Valves https://www.lspproducts.com/product/air-admittance-valves-copy/ Thu, 24 Aug 2023 11:14:44 +0000 https://www.lspproducts.com/?post_type=product&p=9068 The purpose of an Air Admittance Valve (AAV) is to provide a method of allowing air to enter the plumbing drainage system without the use of a vent to prevent sewer gases from escaping into a building. An Air Admittance Valve is a one-way valve designed to allow air to enter the plumbing drainage system when negative pressures develops 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. Each AAV is scientifically tested and designed never to fail.

*An Air Admittance Valve is not designed to relief positive pressure.
**Air Admittance Valves are not designed to function below -40°F or above 150°F

APPROVALS/LISTINGS
• ASSE 1050 & 1051
• NSF Standard
• IAPMO - Classified Mark
• ASTM D 2665/D 2661
• International Plumbing Code (IPC) 2003
• International Residential Code (IRC) 2003

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