Patent ID: 6112950
Filing Date: 2000-09-05
Classification: B65D,F16K

Abstract:
A valve device to be mounted in the neck opening of a receptacle containing a substance to be dispensed, the device comprising both a valve body (1) having therein a chamber (2) defined axially at one end by an annular valve gasket (3) including a central opening, and a valve plunger (10) passing through the gasket (3) and including a dispensing channel (12) opening out in its outside surface via a radial hole (13), said valve plunger (10) being movable inside the valve body (1) between a rest position in which the radial hole (13) opens outside the chamber (2) and an actuation position in which the radial hole (13) opens inside the chamber (2), the valve plunger (10) being urged by a resilient member (5) towards its rest position, the device being characterized in that said valve plunger (10) is molded out of a material comprising a mixture of acetal resin, polytetrafluoroethylene (PTFE), and silicone, such that said valve plunger (10) slides with low friction over said valve gasket (3),wherein said material of the valve plunger (10) consists essentially of acetal resin, PTFE, and silicone.