A process for the preparation of a normally closed solenoid valve

摘要

A normally-closed electromagnetic valve has a body member having a receiving space, a fixed core, a valve seat, a moving core, a resilient member urging the moving core toward the valve seat, a valve element and a coil exciting the fixed core to produce an attracting force between the fixed core and the moving core, wherein the moving core has a through hole, the valve element is inserted into the through hole from the valve seat-side, at least a part of the resilient member is inserted into the through hole from the fixed core-side and the resilient member is compressed between a moving core-side end of the fixed core and a fixed core-side end of the valve seat.