The present invention relates to a safety valve (1) having a valve housing (2), in the housing interior of which there is provided a shut-off body (3) which, by means of at least one elastic retention element (4), is held in an open position of the safety valve (1) counter to the force of a medium flowing through the valve housing (2), in which open position the medium flows through a valve opening (5) in the shut-off body (3). Here, the shut-off body (3) is displaceable in the valve housing (2) such that said shut-off body (3), in the event of a pressure drop on its outflow side, moves against a closing body (7) into a closed position of the safety valve (1) in which the closing body (7), which is acted on by at least one elastic pressure-exerting element (8), sealingly closes off the valve opening (5) in the shut-off body (3), wherein at least one bypass duct is provided which, in the closed position of the safety valve (1), can be opened so as to connect the inflow side of the shut-off body (3) to the outflow side thereof until, when pressure equalization has taken place, the shut-off body (3) moves over the at least one bypass duct into the open position.