invention is not in use the torsion spring 34 will automatically cause the body portion of the assembly to be moved to the closed position p2 shown in fig2 of the drawings in this position the opening 42 into the coupler member of the gladhand assembly will be abutted with the flange element 17 of the stop member 16 further the raised seal 18 carried by the stop member will provide a close fit between the stop member and the seal element 43 because of this engagement the seal element 43 and air passageway 40 are protected from contamination from dirt debris road films and the like in addition airflow through the passageway 40 is terminated at opening 42 by the engagement of the flange element 17 with the seal element 43 however under some operating conditions it is possible that a leak may occur at the point of the interface between the flange element 17 and the seal 43 a fail safe and leak proof non use engagement of the components of the gladhand assemblies of the present invention is achieved by providing a separate locking assembly 60 the locking assembly 60 includes a generally u shaped bracket having upper and lower generally parallel flange elements 61 and 62 which are joined by an intermediate portion 63 the upper flange element 61 is pivotably mounted to the mounting plate 14 of the bracket by a fastener 64 which.