PNEUMATIC VALVE

摘要

PURPOSE: A pneumatic valve is provided to sense the open or close state of a valve easily and to make easy the installation by improving the structure. CONSTITUTION: A pneumatic valve composed of a valve housing(410), a valve cover, a valve head, a valve stem(441) and a switch device additionally comprise of a sensor(161) sensing the elevation of the valve stem for the confirmation of the open or close state of a pneumatic valve. Herein, the pneumatic valve is in an open state according to the supply of the compressed air so that fluid flows by passing in the valve housing. The sensor senses the upper end part of the valve stem and makes a confirmation of the open state of the pneumatic valve according to the approach or contact of the upper end part of the valve stem to the sensor when the valve stem is lifted completely.