| 摘要 |
A hot-water control valve is provided to carry out manual operation in an emergency as the power transmission between the rotary shaft and the drive motor is cut off by the ratchet gear part by rotating the rotary shaft using the handle. A hot-water control valve comprises a valve part(100) which opens and closes the flow of fluid, and a valve driving part(200) driving the valve part. The valve driving part includes a housing(210), a rotary shaft which is supported to rotate in the housing and equipped with a drive cam for actuating the valve part, a drive motor which is built in the housing and rotates the rotary shaft according to electric signals in one direction, a handle(230) which installed to be exposed out of the housing and directly manipulated by the user to rotate the rotary shaft in the opposite direction, and a ratchet gear part which blocks the power transmission between the drive motor and the rotary shaft when the handle is manipulated. |
