Anti-asphyxia valve assembly

A valve assembly, comprising:

• a first housing;
• a diaphragm member coupled to an end of the first housing, the diaphragm member having sealing members configured to be individually pivotable, each sealing member of the sealing members having a projecting member protruding away from a surface of the sealing member and from the end of the first housing;
• and
• a second housing coupled to the end of the first housing over the diaphragm member, the second housing having ports extending through the second housing and spaced about the second housing,
• wherein the diaphragm member is structured to actuate between a first state and a second state,
• wherein, responsive to a pressure within the first housing being below a certain level, the diaphragm member is caused to be in the first state in which (i) the sealing members seal the end of the first housing and (ii) the ports are open, and wherein, responsive to the pressure within the first housing being at or above the certain level, the diaphragm member is caused to be in the second state in which (i) the projecting members seal the ports and (ii) the end of the first housing is open,
• wherein the end of the first housing includes a plurality of rib members defining orifices, and
• wherein in the first state each sealing member of the sealing members engages at least one of the rib members to seal each of the orifices.

A valve assembly, comprising:

• a first housing;
• a diaphragm member coupled to an end of the first housing, the diaphragm member having sealing members configured to be individually pivotable, each sealing member of the sealing members having a projecting member protruding away from a surface of the sealing member and from the end of the first housing;
• and
• a second housing coupled to the end of the first housing over the diaphragm member, the second housing having ports extending through the second housing and spaced about the second housing,
• wherein the diaphragm member is structured to actuate between a first state and a second state,
• wherein, responsive to a pressure within the first housing being below a certain level, the diaphragm member is caused to be in the first state in which (i) the sealing members seal the end of the first housing and (ii) the ports are open, and wherein, responsive to the pressure within the first housing being at or above the certain level, the diaphragm member is caused to be in the second state in which (i) the projecting members seal the ports and (ii) the end of the first housing is open, and
• wherein the end of the first housing includes a finned member protruding away from the end of the first housing and defining gas flow paths within the second housing, each gas flow path of the gas flow paths being associated with a respective one of the sealing members.