Patent ID: 8322681

Claim:
A relief valve, comprising: a first valve body for opening and closing a fluid passageway between a first valve connection and a second valve connection; a second valve body, disposed on the first valve body, for opening and closing a valve passageway, disposed in the first valve body, between the first valve connection and an interior of the relief valve; at least one throttle duct that establishes a connection between the interior of the relief valve and a face of the first valve body; a spring for moving the second valve body in an opening direction of the second valve body; an actuator for moving the second valve body in a closing direction, wherein a movable member of the actuator is disposed so as to be movable further in the same direction once the second valve body has been closed, so that the first valve body is movable in an opening direction of the first valve body by an engagement of the second valve body with a valve seat disposed on the first valve body, and wherein a stop element is operatively connected to at least a select one of the second valve body and the movable member, and is engageable with the first valve body by the spring force of the spring in order to move the first valve body in a closing direction with the help of the spring, wherein the relief valve is an insertion-type valve to be inserted into housing for sealing an interior of the housing by means of a flange having a seal, which serves as a second valve connection, the valve seat being disposed in the housing.