Oatey Sure-Vent® AAVs are engineered for dependable performance and long-term reliability. Trusted by plumbing professionals, these valves are designed to support efficient wastewater flow while maintaining trap seal protection and indoor air quality across a wide range of plumbing installations.
How Do Oatey Air Admittance Valves Work?
Oatey Air Admittance Valves open automatically to admit air into the drainage system when wastewater flows through the drain and negative pressure is created. This air intake equalizes pressure within the piping, allowing wastewater to flow freely and helping maintain proper trap seals.
When the system is not in use, the valve closes tightly to prevent sewer gases from escaping into the living or occupied space. This pressure-responsive design eliminates the need for vent pipes through the roof in approved applications, offering increased installation flexibility.
Are Oatey AAVs Code-Compliant?
Oatey Sure-Vent® Air Admittance Valves comply with ASSE Standards 1050 and 1051 and are IAPMO listed. They are accepted by many plumbing codes in the United States and Canada for venting individual fixtures, branch lines, and, in some cases, entire systems, subject to local code requirements and installation conditions.
Always consult local plumbing codes and authorities having jurisdiction to confirm acceptance and proper use.
Oatey Sure-Vent® AAV Models and DFU Ratings
Drainage Fixture Unit (DFU) ratings are used to determine the appropriate AAV model based on fixture load and system design requirements.
| Model / Size |
Stack DFU |
Branch DFU |
Code Compliance |
Typical Application |
| Mini Sure-Vent® |
8 |
24 |
ASSE 1050/1051, IAPMO |
Single fixture, small bath |
| Standard Sure-Vent® |
20 |
160 |
ASSE 1050/1051, IAPMO |
Multiple fixtures, kitchen |
| Commercial Sure-Vent® |
160 |
500 |
ASSE 1050/1051, IAPMO |
Commercial, large systems |
Note: Accessories for AAVs do not have Stack DFU or Branch DFU ratings, as they are not venting devices.
How to Install an Oatey AAV: Step-by-Step Guide
Installation requirements may vary by application and local plumbing codes. Always follow manufacturer instructions and applicable regulations.
- Determine Placement: Install the AAV at least four inches above the horizontal branch drain and a minimum of six inches above the finished insulation level when installed in an attic.
- Prepare the Pipe: Cut and clean the vent pipe at the intended installation location.
- Attach the AAV: Secure the AAV using the appropriate fitting or adapter.
- Check for Accessibility: Install the valve in a location that remains accessible for inspection, maintenance, or replacement.
- Test the System: Run water through the fixture and verify proper air admittance and valve operation.
Note: Oatey AAVs are not designed for outdoor installation or direct exposure to UV rays.
