Patent ID: 8763640

Claim:
A rotary valve in which a movable valve element where a communication path is formed rotates about a predetermined shaft center and, thereby, a communication state among a plurality of connection ports is controlled through the communication path, comprising: a first valve seat opposing the movable valve element on one side of the movable valve element in a direction along the shaft center, the plurality of connection ports being formed in the first valve seat; a second valve seat opposing the movable valve element on a side opposite to the first valve seat; and first and second sealing members, wherein each of the first and second valve seats is arranged apart from the movable valve element with a predetermined clearance, the communication path penetrates the movable valve element in a direction parallel to a longitudinal axis of the shaft center, the first sealing member is arranged around the communication path so as to seal a space inside the communication path from a space defined by the clearance on a side close to the first valve seat, and the second sealing member is arranged around the communication path so as to seal the space inside the communication path from the space defined by the clearance on a side close to the second valve seat, and part of the first sealing member passing above the connection ports when the movable valve element rotates is wider in a direction parallel to a sealing surface than another part of the first sealing member.