air admittance valve

  The TUUBER air admittance valve is the only patented dual sealing air admittance valve that offers 2x the superior seal to prevent sewer gas and odors from escaping into a home or building.


How does the air admittance valve work?
The valve opens to satisfy negative pressures that can develop in the plumbing drain system when the fixture begins to drain allowing air to enter the drain system. The valve two seals close by gravity at zero (0) differential pressure, and under positive internal pressure and in low-pressure conditions.

Where can air admittance valve be used?
The valve can be used in new or existing applications as a secondary vent alternative to a vent extended to the roof outside.

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