Electromagnetic water supply valve

This invention provides an electromagnetic water supplying valve that can restrain the vibration of the diaphragm valve body when the valve is closed, and that can restrain a longer time required before the valve is closed. The electromagnetic water supplying valve comprises: a valve seat (9) disposed in a valve port (8) that is formed between an inflow chamber (5) and an outflow chamber (7); a diaphragm valve body (13) for closing the valve port (8); a communication hole (16) communicating the inflow chamber (5) and a pilot chamber (14); a pilot hole (15) communicating the pilot chamber (14) and the outflow chamber (7); and a plunger (18) for opening/closing the pilot chamber (14). The electromagnetic water supplying valve further includes a first guide member (30) that is opposed to and spaced from the outer peripheral surface (31) of the valve seat (9) at a predetermined distance (f) to form therebetween a gap (d) of a regular interval before the valve body (13) is seated on the valve seat (9) when the pilot hole (15) is closed and the valve port (8) is switched from an open position to a closed position, and that restrict the flow rate of the water flow from the inflow chamber (5) to the outflow chamber (7) by means of the gap (d) to a fixed flow rate that is smaller than that restricted by a water restriction hole (6).