Oatey 39220 160 DFU Sure-Vent SCH. 40 PVC Adapter AAV, 2" x 3", White

Product Description Oatey? Sure-Vent? 160 DFU Capacity Air Admittance Valve's one-way valve is designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system.The purpose of an Air Admittance Valve is to provide a method of allowing air to enter the plumbing drainage system without the use of a vent extended to open air and to prevent sewer gases from escaping into a building. An Air Admittance Valve is a one way valve designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system. The device shall close by gravity and seal the vent terminal at zero differential pressure (no flow conditions) and under positive internal pressures. From the Manufacturer 2-Inch Sure Vent Air Admittance Valve 39220

• Complies to ASSE Standard 1050 and 1051
• For use as a secondary vent
• One size approved to handle up to 4" vent pipe
• Opens/closes as needed by building's plumbing system
• Sweet Spot? technology opens at -0.01 psi and seals at 0 psi and above
• Complies to ASSE Standard 1050 and 1051.
• For use as a secondary vent.
• One size approved to handle up to 4" vent pipe.
• Opens/closes as needed by building's plumbing system.
• PVC