NON-REFILLING AEROSOL VALVE
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United States of America Patent
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app pub date -
Jul 24, 2017
filing date -
Jul 25, 2016
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Abstract
An aerosol valve with a refill prevention mechanism is provided. The valve has a valve stem disposed in a valve housing that defines an inner chamber. The valve stem has upper passage in an upper portion of the valve stem that is provided with a flexible resilient member. The flexible resilient member is compressed on an orifice or aperture communicating with the housing to create a seal and prevent filling in an open position when pressure in the upper passage is greater than a pressure in the inner chamber. The flexible resilient member is deflected away from the orifice or the aperture when pressure in the upper passage is less than a pressure in the inner chamber to allow dispensing of a product.
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