Vent system for protection from moisture

An air ventilation system, comprising:

• a frame circumscribing an interior duct;
• an upper cover coupled to the frame;
• a deflector facing an opposite side of the frame from the upper cover;
• an ancillary air pipe;
• a plurality of exterior air windows, each being formed from the frame and the upper cover, the plurality of exterior air windows permitting air and liquid to freely circulate therethrough;
• and
• a valve subsystem at least partially housed within the upper cover and the frame, the valve subsystem in fluidic communication with the plurality of exterior air windows and the interior duct during at least one mode of operation of the air ventilation system,
• wherein the valve subsystem is configured to permit air flow from the plurality of exterior air windows through to the interior duct and prevent liquid flow from reaching the interior duct during the at least one mode of operation of the air ventilation system,
• wherein each of the deflector and the frame comprises an inner annular ancillary air pipe lip configured to fit to the ancillary air pipe, and
• wherein the ancillary air pipe is fit into each of the inner annular ancillary air pipe lips and extends between the frame and the deflector.

An air ventilation system, comprising:

• a frame circumscribing an interior duct;
• an upper cover coupled to the frame;
• a plurality of exterior air windows, each being formed from the frame and the upper cover, the plurality of exterior air windows permitting air and liquid to freely circulate therethrough;
• and
• a valve subsystem at least partially housed within the upper cover and the frame, the valve subsystem in fluidic communication with the plurality of exterior air windows and the interior duct during at least one mode of operation of the air ventilation system,
• wherein the valve subsystem is configured to permit air flow from the plurality of exterior air windows through to the interior duct and prevent liquid flow from reaching the interior duct during the at least one mode of operation of the air ventilation system,
• wherein the valve subsystem comprises:
• a baffle comprising a plurality of interior valve windows, the baffle partitioning the valve subsystem into at least a valve chamber and an underlid chamber;
• and
• a plurality of floatable elements freely positioned within the valve chamber, the plurality of floatable elements positioned to reversibly seal the plurality of interior valve windows, and
• wherein, during the at least one mode of operation of the air ventilation system:
• the valve chamber is in fluidic communication with the plurality of exterior air windows;
• and
• the underlid chamber is in fluidic communication with the interior duct.