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Oatey 39223 Sure-Vent® 500 DFU Air Admittance Valve (AAV) with PVC adapter aims at providing proper air flow into drainage system without a need for vent to be extended to open air. Due to the specific, thought-through construction, the given device stands sentinel on air quality in a room or a building, for it retains/inhibits sewer gases.
Benefits
The 39223 one-way AAV employs the Sweet Spot™ technology, which allows air access to plumbing drainage with the appearance of negative pressure in a pipe system. In case of flow absence (0 diff. pressure) or under positive pressure, the given element gets closed and seals the vent terminal.
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