| 摘要 |
PROBLEM TO BE SOLVED: To provide a butterfly valve eliminating axial displacement of a valve body due to water pressure and minute water leakage due to the axial displacement of the valve body.SOLUTION: A valve body 16 arranged in a body 10 and switching a passage is press-fitted into a rubber sleeve 15, and a rotational shaft 17 is arranged while penetrating the valve body 16. With respect to the rotational shaft 17, the valve body 16 is slidably held in the axial direction of the rotational shaft, and is held in the rotational direction thereof so as to rotate together with the rotational shaft. Consequently, even when water pressure in the body 10 rises and the rotational shaft 17 displaces onto the side of a motor actuator 21, since the valve body 16 does not displace in the axial direction, water leakage due to axial displacement can be eliminated. |
