| 摘要 |
PROBLEM TO BE SOLVED: To provide a diaphragm valve element of flow control valve capable of solving the problem that flow control becomes unstable because of a diaphragm membrane valve seat part separated from a retainer and vibrates, thereby ensuring stable flow control.SOLUTION: A diaphragm valve element 38 of the flow control valve includes a diaphragm membrane 42 having an annular valve seat 112 facing a valve seat 44 and located at radially central part, a peripherally annular fixed part 115, and a flexible membrane 116, and a retainer 40 retaining the valve seat 112, and moreover changes a water flow of water passage 36 based on alienation from the valve seat 44 of the valve seat 112. The valve seat 112 of the diaphragm membrane 42 and flexible membrane 116 are individually arranged separately, the valve seat 112 is bonded/fixed to the retainer 40, and an inner circumference 116B of the flexible membrane 116 is fixed to the retainer 40 while being held by the retainer 40. |
