| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuation condition detecting device which can be installed on an existing valve without removing its main body from a connection pipe to be capable of precisely and stably detecting condition valves of a valve main body indicating an actuation condition of the valve. SOLUTION: On a detachable parted part 6 in the main body 3 of the valve, a sensor 14 to detect the actuation condition is installed for a mating surface 3m with the parted part of the main body 3 as a subject surface to detection.
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