This disclosure generally relates to a breast pump valve system. The breast pump valve system includes a valve and a milk collection apparatus. The valve includes one or more retaining ribs which are disposed around the circumference of the valve. The one or more retaining ribs are interrupted only by a vent channel. The valve further includes a vent, connected to the vent channel. The vent channel allows air in the milk collection apparatus to escape through the vent in the valve. The milk collection apparatus includes a chamfered collar to receive the valve. The milk collection apparatus further includes a connector disposed on an external surface of the chamfered collar.
