| 摘要 |
PURPOSE:To enable a valve body to amoothly move even if scale attaches to a valve hole and valve body by providing a cam bidy for opening and closing a ball valve provided in a cold water intake and warm water intake in interlocking relationship with an automatic expansion device expanding and contracting in the direction of the valve axis by detecting water temperature. CONSTITUTION:In a valve hole 6 are provided an automatic expansion divice 8 expanding and contracting in the longitudinal direction of the valve hole after detecting water temperatre in the interior, a cold water intake 17 and hot water intake 20 respectively facing a first valve body 11 and cam surface 14 and opening to the valve hole 6. Hot water from a hot water supply flows into a water mixing chamber B to heat a wax container 9 so that a rod 10 advances rightward to displace a first valve body 11 and cam tube 12 rightward. When temperaure in the water mixing chamber B becomes higher than a set temperature, the opening between the first valve body 11 and smaol diameter portion 6a and the opening between a ball 19 and valve seat 18 are increase while the opening between a ball 22 and valve seat 21 is decreased. |
