| 摘要 |
A rotary air valve for a motor vehicle air conditioning, heating and ventilation system has a spring biased floating valve mounted on a rotary valve frame. The floating valve is spring biased radially outward against the interior of the case so that arcuate ribs at opposite ends thereof remain engaged in internal grooves in the case to provide sealing at these locations while the other oppositely arranged edges of the valve are contacted by seals that are mounted within the case on opposite sides of the openings controlled by the valve.
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