| 摘要 |
The invention provides an anti-glug fitting for co-operation with the neck portion of a container for liquids, the fitting comprising an outer body adapted to conform to the neck of the container, and formed with a shaped through bore extending from an inlet end to an outlet end and a guard member partially obturating the outlet; wherein the outlet opens from a chamber defined by the through bore and by opposed spaced apart faces of the guard member and a fixed or movable member, and by a plurality of apertures forming part of the through bore which allow fluid flow past the valve body. The total area defined by the apertures is equal to, or less than, the total area of the outlet, thereby to alleviate glugging by providing that air may pass into the neck of the container at a rate equal to, or greater than, the rate at which liquid flows out. The fixed or movable member is preferably a moveable valve body which co-operates at its periphery with a plurality of radially spaced apertures forming a part of an inlet passage in the open position, but obturated in the closed position by the valve body seating on the valve seat.
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