SOLENOID PILOT OPEN/CLOSE VALVE

摘要

An electromagnetic pilot opening/closing valve includes: a valve main body member that includes a sliding hole and a main valve seat; a main valve body that is slidably provided in the sliding hole of the valve main body member and is seatable on the main valve seat; a movable iron core that is slidable in a same direction as or parallel to a sliding direction of the main valve body; and a fixed iron core that includes a coil and attracts the movable iron core by energization of the coil. The main valve body includes a second sliding hole and a pilot valve seat, and a pilot valve body seatable on the pilot valve seat is provided in the second sliding hole so as to be slidable in the same direction as or parallel to the sliding direction of the main valve body. The movable iron core and the pilot valve body are designed to slidably engage with each other, and the movable iron core and the main valve body are designed to slidably engage with each other with a play therebetween. When the movable iron core is attracted by the fixed iron core by energization of the coil, the movable iron core causes the pilot valve body to slide inside the second sliding hole and sliding of the pilot valve body causes the main valve body to slide inside the sliding hole.