Sure-Vent 3 In. X 4 In. PVC Air Admittance Valve with 500 DFU Branch
Sure-Vent 3 In. PVC Air Admittance Valve with 500 DFU Branch. Oatey Sure-Vent Air Admittance Valves provide the ideal venting solution for island sinks, remote bathrooms and remodel jobs by eliminating the need for a stack vent.