Directional control valve for vehicle braking system - has valve piston subject to inlet pressure to form priority connection.

摘要

The 3/2 directional control valve assembly has the first valve (4,25) of the secondary connection formed by the valve body (4) and a valve seat (25), and the second valve (4,16) of the priority connection is formed by the valve body and a piston (15,16). The piston is pretensioned in the opening direction of the first valve and in the closing direction of the second, and under the opposite conditions, the piston is subject to the pressure of the inlet (6) with the priority connection. USE/ADVANTAGE - Valve for an electrically controlled vehicle braking system in which the outlet has a priority connection with one of the inlets to give redundant brake pressure control.