Sure-Vents come in 6 DFU capacity, 20 DFU capacity, 160 DFU capacity and 500DFU capacity.

The Sure-Vent should be installed a minimum of four inches above the horizontal branch drain (trap).

No. The AAV must have access to the open atmosphere. If the Sur-Vent is to be installed in a wall cavity, you must use one of our AAV wall boxes with a louvered face plate. This allows the Sure-Vent to have access to the open atmosphere, and also acts as an access door.

Yes, but the attic must have an access point for maintenance, and the valve should be installed at least six inches above the insulation. Extreme temperatures and insulation fibers can affect performance.

Yes, a Sure-Vent (air admittance valve) may be used to vent a sealed sump pit with a waste grinder pump, but only under certain conditions. Approval from local plumbing or building officials is required, as not all municipalities allow this application. It is also important to confirm compatibility with the pump manufacturer and ensure that all fixtures connected to the system are properly vented, since inadequate venting can lead to poor drainage and system performance issues. Because a Sure-Vent allows air into the system but does not relieve positive pressure, proper system design is critical. After confirming all approvals, you can contact customer service to request a detailed installation drawing for this setup.

Yes. The Sure-Vent is a mechanical device and like all mechanical devices, a scheduled maintenance routine should be set up to ensure AAV is functioning properly. 

No. Every dwelling needs to have one main vent stack exiting the roofline into the free atmosphere. It is also recommended that a relief vent be installed when completing a new home or large addition rough-in. 

No. Oatey Sure-Vents are not designed for exposure to ultraviolet rays and should not be installed outdoors.

DWV is an acronym used in the plumbing industry which means Drainage, Waste and Vents.

No. You should however bevel (chamfer) the pipe end to prevent cutting or scaring of the rain collar as it is being pushed over the pipe.