Patent ID: 8459510

Claim:
A dispenser for attachment to a liquid container comprising: (a) a valve body of a generally hollow form having a liquid inlet port on one end of the valve body for coupling to the liquid container, the valve body further including an air vent opening and a liquid vent opening, the air vent opening and liquid vent opening located on an opposite side of the valve body from the inlet port; (b) a lid, the lid and valve body formed of a single piece of material, the lid movable between a liquid blocking and a liquid dispensing position; (c) a liquid seal coupled to the lid and positionable within the liquid vent opening and an air seal coupled to the lid and positionable within the air vent opening; (d) a collapsible dome member coupled to the valve body adjacent to the lid, the collapsible dome member deformable between a compressed and an expanded state.