Patent ID: 8484970
Filing Date: 2013-07-16
Classification: F02B,Y02T,Y10T

Abstract:
1. Relief valve comprising: a first valve body for opening and closing a fluid passage between a first valve connection and a second valve connection, a valve gate being formed through the first valve body and a valve seat formed on the first valve body in proximity to the valve gate; a second valve body movably disposed with respect to the first valve body for opening and closing the valve gate in the first valve body for providing communication between the first valve connection and a valve interior when the second valve body is moved away from the valve seat for opening the valve gate; a second fluid passage providing a connection between the valve interior and the second valve connection; a closure member for selectively opening and closing the second fluid passage; an actuator for actuating the second valve body in a closing direction, the actuator having a movable member that is movable in the closing direction after the closing of the second valve body so that the first valve body can be moved in an opening direction of the first valve body via an engagement of the second valve body with the valve seat on the first valve body; and a stop element operatively connected to the second valve body and/or the movable member and being engageable with the first valve body to move the first valve body in a closing direction.