Discharge device for vehicle wastewater management system

A vehicle wastewater management drainage system for draining a permanent wastewater holding tank of a vehicle, comprising:

• a housing including:
• a cylindrical outer wall defining an inlet chamber;
• an inner wall below the inlet chamber and extending from an inner surface of the cylindrical outer wall;
• an outlet passage extending through the inner wall;
• and
• an inlet for introducing wastewater into the inlet chamber;
• a valve capable of sealingly closing the outlet passage, the valve being disposed within the inlet chamber and being capable of axially moving therein;
• an outlet seat attached to the inner wall and encircling the outlet passage;
• and
• a valve activation mechanism including a plunger attached to the valve for axially moving the valve within the inlet chamber, and a user control member;
• wherein the valve activation mechanism is capable of moving the valve from a first position where the valve is spaced from the outlet seat and fluid may flow through the outlet passage, to a second position where the valve sealingly engages the outlet seat and fluid may not flow through the outlet passage.