The invention relates to a torque support for a valve lock (5) in order to prevent a rotation of the lock with respect to the valve (1), wherein a connection housing (8) adjoins the valve lock and at least one boom (9, 9a) carried by the connection housing rests against the valve housing in the pivoted-out end position. Similarly, the torque support can also be connected to the valve housing and the boom can rest against the connection housing, or the connection housing is integrated in the valve lock.