| 摘要 |
PROBLEM TO BE SOLVED: To simplify installation of a pressure opening/closing valve and a pressure switch by integrating them, while a connection opening for installing them is required respectively and installation must also be performed respectively for a high pressure hot water supplier wherein the valve for maintaining the pressure in the supplier within fixed pressure and the switch for detecting the existence of water inside of the supplier are installed. SOLUTION: A pressure responsive plate of a pressure opening/closing valve also serves as a pressure sensing plate of a pressure switch. Then, a reed switch, etc., is attached to a housing and a magnetic, etc., is attached to the responsive plate, thereby maintaining the pressure within a fixed range by opening or closing the valve with vertical motion of the responsive plate. An electric signal is also transmitted at set pressure regardless of opening or closing of the valve.
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