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Oatey, Black/White 39223 Sure Vent Air Admittance Valve 500 DFU x 4-Inch PVC Schedule 40 Adapter, 3 in. – 4 in. 160 Branch
Product Description Oatey? Sure-Vent? 500 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

Price is $37.00
Price: $37.02