Non-refillable valve

摘要: A nonrefillable valve is provided that allows for an initial filling of a container, but prevents subsequent refilling the container. The operating assembly includes stem and core which slidably received in distal end stem. In first position, resides above rim or protrusion within chamber. After second position defined when operated to force beyond seating engagement with seat, thus sealing then selectively third open discharge container as desired. Subsequent prevented by fluid reentering forces its seated seat.