Patent ID: 8689815

Claim:
An air release vent valve comprising: (a) a valve body having an inlet port and a venting orifice; (b) a direct float configured with an axial passageway; (c) a displaceable orifice closure rod deployed in at least a portion of said axial passageway, said displaceable orifice closure rod being longitudinally displaceable therein; wherein at least a portion of said displaceable orifice closure rod extends above said direct float and at least a portion of said displaceable orifice closure rod is configured to close said venting orifice when a water level in said valve body reaches a predetermined level, and said venting orifice is configured as an initial vent orifice eonligured in said valve body and a secondary vent orifice, said intitial vent orifice is larger than said secondary vent orifice, (d) a displaceable vent orifice sealing element that is responsive to both a liquid level within said valve body and any pressure differential between an ambient outside pressure and a pressure within said valve body, said secondary vent orifice being configured in said displaceable vent orifice sealing element; and (e) a suspended surge prevention element that is suspended within said valve body below said initial orifice, said suspended surge prevention element configured with at least one surge prevention orifice that is larger than said secondary orifice so as to at least partially seal said initial orifice in response to a velocity of a flow of air through said valve body and said surge prevention element is held in such a deployment by a pressure differential between an ambient outside pressure and a pressure within said valve body.