Oatey® 3" – 4" 500 DFU Sure-Vent AAV 3" x 4" Sch. 40 PVC adapter Outdoor Power Equipment It also offers extraordinary blade

It also offers extraordinary blade strength and corrosion resistance

RESHARPENABLE BLADE for long-lasting performance and reliability

Decorative styling with chrome finish

Durable pans will not rust or crack

with the hour meter keeping track of necessary upkeep at regular intervals

Oatey® 3" – 4" 500 DFU Sure-Vent AAV 3" x 4" Sch. 40 PVC adapter Outdoor Power Equipment It also offers extraordinary bladeOatey 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