A combined valve includes a pilot mechanism and a manual mechanism. The manual mechanism includes: a flange formed with a communication passage; a housing including a holding hole formed in an axial direction for rotatably holding the manual mechanism and a storage opening part having a wider diameter than the holding hole and housing the flange in position; an operation port located in a position corresponding to the holding hole and internally holding a joint; and an exhaust port opening in an inner wall of the storage opening. The manual mechanism further includes a first sealing member forming a connecting passage to connect the operation port and the communication passage between the housing and the manual mechanism; and a second sealing member sealingly separating an opening portion of the exhaust port opening in the inner wall of the storage opening part from the connecting passage.