Oatey Sure-Vent 2"-3" 160 Branch, 72 Stack DFU Air Admittance Valve 39220

Ensure your drainage systems are operating efficiently with this Oatey Sure-Vent 2"-3" 160 branch, 72 stack DFU air admittance valve! This one-way valve is expertly crafted to allow air into your plumbing drainage systems when negative pressures develop within them. Designed with Sweet Spot technology, the valve automatically opens at -.01 PSI and seals at 0 PSI and above as needed. It has a 160 branch, 72 stack DFU rating. Great for use as a secondary vent, this air admittance valve is made with a convenient PVC Schedule 40 adapter and can handle a vent pipe of up to 4". Incredibly reliable, the valve is also built with screening on the air inlets to guard the seal. Plus, a protective sleeve provides a secure grip for easy installation, while keeping the valve free from debris. Overall Dimensions: Diameter: 2"-3"