FAIL SAFETY CONTROL VALVE OF COOLING WATER

摘要

A fail safety control valve of cooling water comprises: a valve housing having at least two ports on the outer surface thereof and having an inner space in communication with the ports; a valve member rotatably installed in the inner space of the valve housing; an actuator which rotationally drives the valve member; and a fail safety unit which senses the temperature of the cooling water in the valve housing in the event of a failure to rotate the valve member.