Apparatus for providing a controlled flow of waste material from a waste

Abstract

A valve assembly provides for a controlled flow of waste material from a toilet in an aircraft under all weather conditions including freezing. The valve assembly includes a first valve disposed within a hollow tube and manually movable between a first position sealing the tube against the passage of waste material and a second position providing for such passage. The valve includes first and second members and a plate manually rotatable within the tube between the first and second positions, the second member and the plate receiving a multiplied force from a further rotation of the first member to pivot to a position sealing the valve to the tube. An energy storage member associated with the second member facilitates the pivotable movement of the second member. Detents in the tube and at the end of the second member retain the plate in sealing relationship with the tube. The valve assembly also includes a second valve mounted externally on the tube downstream from the first valve and manually rotatable between a first position sealing the tube and a second position opening the tube. The second valve includes a member for rotating, and then pivoting, the second member and the plate in the first valve from the second position to the sealed relationship with the tube when the second valve is rotated from the second position to the first position. The second valve includes a retainer in the tube and a mechanism on the valve for latching the second valve to the tube in the first position of the second valve.