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.
Product Features
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
We offer flexible shipping and scheduling options, up-to-date delivery estimates, and free ground shipping on any order over $99 to make sure your order gets to you on-time, for less.
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.