Importance

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Abstract

The invention relates to a relief valve comprising:

a first valve body (3) for opening and closing a fluid passage (33) between a first valve connection (31) and a second valve connection (32); a second valve body (4), which is arranged on the first valve body (3), for opening and closing a valve gate (3A), which is arranged in the first valve body (3), between the first valve connection (31) and a valve interior (9); at least one fluid passage (11) providing a connection between the valve interior (9) and the second valve connection (32); a closure member (18) for selectively opening and closing the fluid passage (11); an actuator (2, 7) for moving or actuating the second valve body (4) in a closing direction, wherein a movable member (2) of the actuator (2, 7) is arranged so as to be movable, after the closing of the second valve body (4), further in the same direction, so that the first valve body (3) can be moved in an opening direction of the first valve body (3) via an engagement of the second valve body (4) with the valve seat (3C) which is arranged on the first valve body (3), wherein a stop element (13), which is operatively connected to the second valve body (4) and/or the movable member (2), can be brought into engagement with the first valve body (3) to move the first valve body (3) in a closing direction, and also to a method for opening and closing a relief valve.

First Claim