Electro-pneumatic braking control unit for a railway or tramway vehicle

An electro-pneumatic brake control unit for a railway or tram vehicle having multi-layer structure comprising:

• an upper plate including a plurality of pneumatic, electro-pneumatic or electric components and having a plurality of connection through holes and associated coupling channels provided in its lower face;
• a lower plate having through holes for connection with corresponding apertures and/or coupling channels of the upper plate, and having associated coupling channels arranged in its upper face;
• and
• an intermediate plate having a plurality of connection passages in positions predetermined as a function of a pneumatic circuit to be formed, wherein a pneumatic relay valve is integrated in said structure, said relay valve extending through said structure and comprising control chambers formed inside said structure and inlet and outlet ducts which include holes and coupling channels formed in said plates.