A LIMIT SWITCH FOR VALVE

摘要

PURPOSE: A limit switch for a valve is provided to improve the quality and durability thereof by simplifying the structure thereof and enabling the easy operation thereof. CONSTITUTION: A limit switch (100) for a valve comprises an actuating shaft (104), an indicator (105), and an actuating part (110). The actuating shaft is installed inside of a case (103) installed on the top of an actuator for operating a stem connected to the disk of a valve. The indicator is installed on the actuating shaft protruding upward from the case and enables an operator to visually confirm the opening and closing state of the valve. The actuating part is installed inside the case and applies an electrical signal that indicates the opening and closing state of the valve to a controller. An opening rod (115) and a closing rod (116) touching an opening terminal (112) and a closing terminal (113) of a switch are installed in the actuating part. [Reference numerals] (AA) Open