A diaphragm-type solenoid valve has a valve body fixed onto a base, a diaphragm for opening and closing a valve seat provided to an inner end of a second port, Hydraulic control valves a plate for forming a driving chamber between the plate and the diaphragm sandwiched between the plate and the valve body, and a pilot valve for supplying pilot fluid pressure to the driving chamber. API Cast Steel ValvesIn the diaphragm, a disc is encapsulated in a portion facing the port, a sealing rib corresponding to the valve seat is provided, and cushion projecting portions and for coming in contact with cushion receiving portions and of the plate in valve opening are formed behind the portion where the disc is encapsulated. MULTI-FUNCTIONAL WATER PUMP CONTROL VALVEA diaphragm solenoid valve comprising a valve body having a first port and a second port for main fluid in a mounting face to be mounted to a base, a valve seat mounted in a flow path connecting both said ports, a diaphragm for opening and closing said valve seat, a plate for sandwiching and fixing an outer peripheral portion of said diaphragm between said plate and said valve body, a driving chamber formed between said plate and said diaphragm to be separated from said flow path, and a pilot valve disposed on said plate to supply pilot fluid different from said main fluid to said driving chamber, wherein said diaphragm has a central main body portion for opening and closing said valve seat and an elastic support portion surrounding said main body portion, a disc is encapsulated in said main body portion, a sealing rib for coming in contact with and separating from said valve seat is provided to one face of said main body portion, and a cushion projecting portion for coming in contact with a cushion receiving portion of said plate in valve opening is formed on a back face of said main body portion. A diaphragm-type solenoid valve is conventionally known as a valve which can easily suppress inclusion of foreign matter or the like by independently forming a flow path for main fluid. However, because the diaphragm-type solenoid valve is generally formed as a single solenoid valve, it is difficult to easily connect the solenoid valve so as to obtain various flow path structures.

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