APPARATUS FOR BRAKING SYSTEMS OF ARTICULATED VEHICLES

摘要

The present application describes a valve or valve assembly for inclusion in an emergency air supply line to the trailer braking system of an articulated vehicle. The valve or valve assembly has an air inlet, an air outlet, a closing member, and an operating means. The air inlet is connectable to an upstream side of the emergency air supply line. The air outlet is connectable to a downstream side of the emergency air supply line. The closing member is biased towards a closed position in which passage of air through the valve between the first air inlet and first air outlet is substantially prevented. The operating means opens the closing member. The valve or valve assembly also includes control means for retaining the closing member in an open position on receipt of an electrical signal, the signal being derived from an electrical braking system of the vehicle.