Oatey 39239 Sure-Vent 1 1/2" 20 Branch, 8 Stack DFU Air Admittance Valve Kit

Ensure your drainage systems are operating efficiently with this Oatey 39239 Sure-Vent 1 1/2" 20 branch, 8 stack DFU air admittance valve kit. The 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 -0.01 PSI and seals at 0 PSI and above as needed. It has a 20 branch, 8 stack DFU rating. This kit conveniently includes the air admittance valve, a 1 1/2" P-trap, a 6" extension tube, a tubular adapter, and a deep box flange, so you have everything you need! Great for use as a secondary vent, the air admittance valve is made with a tubular adapter and can handle a vent pipe of up to 2". 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. Kit Includes: - Sure-Vent 20 branch, 8 stack DFU air admittance valve - 1 1/2" P-trap - 6" extension tube - Tubular adapter - Deep box flange Overall Dimensions: Diameter: 1 1/2"