| 摘要 |
PROBLEM TO BE SOLVED: To provide a plurality of operation parts so as to operate a drain valve to be opened/closed even in the case of operating any operation part within them, in a remote operation type drain valve device. SOLUTION: This drain valve device comprises a drain valve 26, a hand- operated type remote operation part, a foot step type operation part 188, a drive part 36 driving to open/close the drain valve 26, and a operation force transmission part 44 transmitting operation force from the operation part 188 to the drive part 36 to operate it. The operation part 188 generates air pressure, the drive part 36 receives the air pressure to drive to open/close the drain valve 26, the operation force transmission part 44 connecting the drive part 36 and a plurality of the operation parts 188 is constituted of an air tube, and air pressure generated by the operation part 188 is led to the drive part 36.
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