EXPANSION VALVE DISK

摘要

PURPOSE: An expansion valve disk is provided to improve water-tightness by maintaining the state of the valve disk adhered to a flow path pipe. CONSTITUTION: An expansion valve disk comprises a pressing cover(100) and a disk(200). The pressing cover has a holder part(110) with a movable nut(111). The movable nut is vertically moved along a stem of a stop valve. The disk has a stem insertion hole formed in the bottom of the pressing cover. The insertion hole selectively opens and closes a flow path. The disk is composed of an upper disk(210) and a lower disk(220).