Patent ID: 8561637

Claim:
A valve comprising: an outer housing configured to interengage with a container, and having at least one axis and at least one aperture; a first poppet axially movable within said outer housing between a first closed position and a first open position; a second poppet axially movable within said first poppet between a second closed position and a second open position; a first seal between said first poppet and said housing; a second seal between said first poppet and said second poppet; an actuator movably supported within said outer housing, said actuator being operable for manually moving said first or second poppet to said first open position or said second open position, respectively; a first resilient member abutting said actuator and disposed within a first space between said outer housing and said first poppet, and having a resilient force sufficient to hold said first poppet in said first closed position such that said first poppet urges said first seal against said outer housing when a pressure differential axially across said first poppet is below a first point, and to allow said first poppet to move in said first direction to said first open position when said pressure differential exceeds said first point; and a second resilient member disposed within a second space between said first poppet and said second poppet, and having a resilient force sufficient to hold said second poppet in said closed position such that said second poppet urges said second seal against said first poppet when a pressure differential axially across said second poppet is below a second point, and to allow said second poppet to move in a second direction, different from said first direction, to said second open position when said pressure differential exceeds said second point.