Oatey 39018 Black Coupling

The Oatey Sure-Vent 20 DFU Capacity Air Admittance Valve features a one-way valve that allows air to enter the plumbing drainage system in the event of negative pressures in the piping system. Its main purpose is to provide a means of allowing air to enter the plumbing drainage system without requiring a vent that extends to open air, while also preventing sewer gases from escaping into a building. This device is designed as a one-way valve that opens to allow air into the plumbing drainage system when negative pressures occur in the piping system. It closes by gravity, sealing the vent terminal when there is zero differential pressure (no flow conditions) or under positive internal pressures.

Oatey's products are commonly used in residential and commercial applications, boasting strong brand recognition among consumers. The company stands out in the industry with its high-quality technical and customer support programs. This Air Admittance Valve complies with ASSE Standards 1050 and 1051, making it suitable for use as a secondary vent. It is approved for handling vent pipes up to 3" in size, opening and closing as needed by the building's plumbing system. With a rating of 20 DFU's for venting DWV 2" and smaller pipes, this valve is a reliable choice for plumbing systems.

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