Vent valve
AssigneeITZ Corporation
InventorKoichi Kawasaki
Life of this patent
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Abstract
A vent valve includes a main valve having a valve chamber provided therein with an inside annular valve seat and an outside annular valve seat, a valve body normally seated on the seats under its own weight and opened by atmospheric pressure in response to negative pressure, a water collecting groove formed outward of the outside annular valve seat, a connecting cylindrical part provided at a position deviating from an axis of the valve chamber for communicating with the valve chamber, and a communicating flow path formed along the axial direction of the valve chamber for allowing communication between the water collecting groove and an interior of the connecting cylindrical part.
Claims28
A vent valve comprising a main valve having a valve chamber provided therein with an inside annular valve seat and an outside annular valve seat, a valve body normally seated on said seats under its own weight and opened by atmospheric pressure in response to negative pressure, a water collecting groove formed outward of said outside annular valve seat, a connecting cylindrical part provided at a position deviating from an axis of said valve chamber for communicating with said valve chamber, and a communicating flow path formed along the axial direction of said valve chamber for allowing communication between said water collecting groove and an interior of said connecting cylindrical part.
Dependencies are inferred from the claim text.