Container valve

Abstract

A container for dispensing liquids comprises a body member and a closure including a cap in the form of a plastic molding having an outlet and a control valve within the cap for controlling the dispensing of liquid through the outlet, the control valve being in the form of a one piece plastic molding having a diaphragm portion and a nose portion, the nose portion of the valve normally sealing the outlet but being displaceable therefrom on distortion of the diaphragm portion resulting from pressurization of the interior of the body member, the cap further including a one-way valve which, on pressurization of the interior of the body member, is closed to seal the interior of the cap from the atmosphere, and, on release of pressure from the interior of the body member, opens to interconnect the interior of the cap with the atmosphere to facilitate return of the body member to its normal rest condition.

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