Oatey® 3" – 4" 500 DFU Sure-Vent AAV 3" x 4" Sch. 40 PVC adapter Size:3" – 4" Quality plastic housing with steel

Quality plastic housing with steel components provide a lightweight

Solid cast iron construction

cool-season companion grass that provides stability to the soil and early color

comfortable

including water supply

Oatey® 3" – 4" 500 DFU Sure-Vent AAV 3" x 4" Sch. 40 PVC adapter Size:3" – 4" Quality plastic housing with steelOatey 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. 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