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AAV

< Back to Air Admittance Valves (AAV)

Oatey® Sure-Vent® Air Admittance Valves (AAVs) provide a reliable, space-saving solution for ventilation in plumbing systems, eliminating the need for costly and complex vent piping installations. Designed to open under negative pressure, these valves allow air to enter the drainage system to equalize pressure, effectively preventing the siphoning of trap seals and blocking the escape of sewer gases.

Each Sure-Vent AAV is manufactured with precision to meet ASSE Standards 1050 and 1051, and all sizes are IAPMO listed for assured quality. Available in four sizes, from 8 Stack/20 Branch DFU to 160 Branch/500 Stack DFU, Oatey Sure-Vent AAVs suit a range of residential and commercial needs, offering efficiency, durability, and compliance across various applications.

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Air Admittance Valves (AAV)
AAV
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Frequently Asked Questions

Can an Oatey Sure-Vent be installed outside?

No. The Sure-Vents are not designed for exposure to Ultra Violet Rays.

Can the Sure-Vent be installed in the attic?

Yes, with exceptions. The attic has certain conditions that can affect the AAV performance which should be considered before choosing this as a location. The temperature ranges that the Sure-Vent will operate in are -40°F to 150°F, your attic can experience drastic temperature variations depending on how it is vented and your geographic location. Insulation fibers can get caught inside the diaphragm which will make it harder for the diaphragm to open, or achieve a good seal when it is in the closed position. The Sure-Vent should be installed a minimum of six inches above the finished height of your insulation, and the attic must have an access point to conduct scheduled maintenance.

How high above the fixture trap should the Sure-Vent be located?

A minimum of four inches above the horizontal branch drain (trap). 

Related Resources

Blog

What's the Difference Between a P-Trap and an S-Trap?

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Case Study

Plumber Uses Air Admittance Valve For Outdoor Washrooms, Ensuring Proper Venting and Protection Against Moisture

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Videos

How to Install an AAV in a MODA Box

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