Self-sealing respiratory filter and condensate management apparatus

A respiratory filter and condensate management apparatus for a breathing circuit, the apparatus comprising:

• a filter housing including an air inlet port, an air outlet port, a base, and a base drain, the air inlet port configured to receive a flow of expiratory air, and the air outlet port configured to output the flow of expiratory air;
• a filter member provided within the filter housing and located in a flow path of the expiratory air between the air inlet port and the air outlet port;
• a collection jar removably attached to the filter housing, the collection jar including a liquid reservoir, a spill cover, and a cover drain, the cover drain and the base drain forming a liquid passageway operable to provide fluid communication between the filter housing and the liquid reservoir when the collection jar is attached to the filter housing, and the liquid reservoir operable to collect liquid formed by condensation in the flow of expiratory air within the filter housing when the collection jar is attached to the filter housing;
• and
• a valve assembly configured to permit passage of the liquid formed by condensation in the flow of expiratory gas through the liquid passageway when the valve assembly is in an open position, and configured to prevent passage of the liquid through the liquid passageway when the valve assembly is in a closed position.