An isolation valve, the isolation valve comprising: a housing having an internal surface within the housing, the internal surface having a first outlet and a second outlet; an air gate having an outward face opposite the internal surface, the air gate being located within the housing and configured to move to at least one of a first position blocking flow to the first outlet, a neutral position blocking flow to neither the first outlet nor the second outlet, and a second position blocking flow to the second outlet; a seal groove located on the outward face of the air gate; a seal located within the seal groove, the seal being configured to form a sealed connection with the internal surface around at least one of the first outlet when in the first position and the second outlet when in the second position, wherein the seal groove is an inbound groove including a first groove wall radially inward from the seal and a second groove wall radially outward from the seal; a retainer configured to secure the seal within the seal groove using a fastening mechanism, the fastening mechanism securing the retainer to the outward face of the air gate and then the retainer securing the seal in the seal groove via a seal lip; and a biasing mechanism interposed between the seal and the outward face within the seal groove, the biasing mechanism being configured to apply a force to the seal that allows the seal to conform to a shape of the housing internal surface and apply a sealing pressure to the housing internal surface to form the sealed connection with the internal surface, wherein a gap exists between the second groove wall and the retainer, the gap being configured to allow a sealing surface of the seal to move in and out of the seal groove in response to a balance of forces between the biasing mechanism, the internal surface, and the seal. a housing having an internal surface within the housing, the internal surface having a first outlet and a second outlet; an air gate having an outward face opposite the internal surface, the air gate being located within the housing and configured to move to at least one of a first position blocking flow to the first outlet, a neutral position blocking flow to neither the first outlet nor the second outlet, and a second position blocking flow to the second outlet; air gate being located within the housing and configured to move to at least one of a first position blocking flow to the first outlet, a neutral position blocking flow to neither the first outlet nor the second outlet, and a second position blocking flow to the second outlet; a seal groove located on the outward face of the air gate; a seal located within the seal groove, the seal being configured to form a sealed connection with the internal surface around at least one of the first outlet when in the first position and the second outlet when in the second position, wherein the seal groove is an inbound groove including a first groove wall radially inward from the seal and a second groove wall radially outward from the seal; sealed connection with the internal surface around at least one of the first outlet when in the first position and the second outlet when in the second position, wherein the seal groove is an inbound groove including a first groove wall radially inward from the seal and a second groove wall radially outward from the seal; a retainer configured to secure the seal within the seal groove using a fastening mechanism, the fastening mechanism securing the retainer to the outward face of the air gate and then the retainer securing the seal in the seal groove via a seal lip; and fastening mechanism, the fastening mechanism securing the retainer to the outward face of the air gate and then the retainer securing the seal in the seal groove via a seal lip; and a biasing mechanism interposed between the seal and the outward face within the seal groove, the biasing mechanism being configured to apply a force to the seal that allows the seal to conform to a shape of the housing internal surface and apply a sealing pressure to the housing internal surface to form the sealed connection with the internal surface, being configured to apply a force to the seal that allows the seal to conform to a shape of the housing internal surface and apply a sealing pressure to the housing internal surface to form the sealed connection with the internal surface, wherein a gap exists between the second groove wall and the retainer, the gap being configured to allow a sealing surface of the seal to move in and out of the seal groove in response to a balance of forces between the biasing mechanism, the internal surface, and the seal. gap being configured to allow a sealing surface of the seal to move in and out of the seal groove in response to a balance of forces between the biasing mechanism, the internal surface, and the seal.