Brake modulator for a compressed air braking system of a vehicle

A brake modulator for a compressed air braking system of a vehicle, wherein the brake modulator comprises a main housing in the form of a light alloy die-casting and two relay valves arranged in the main housing in an axial direction of the main housing, wherein each relay valve comprises:

• a pneumatic control inlet, a compressed air inlet, a compressed air outlet and a vent outlet port, a delivery valve seat and a vent valve seat for setting a delivery position and a vent position, wherein the compressed air inlets of the relay valves are connected via a transverse bore of the main housing to a common compressed air port of the main housing, and a delivery duct extends in the axial direction between the transverse bore and the delivery valve seat, in each relay valve
• wherein
• the first relay valve has a first guide body insert and the second relay valve has a second guide body insert, the first and second guide body inserts being disposed into a longitudinal bore of the main housing extending in the axial direction, and
• a first delivery duct of the first relay valve is formed in the first guide body insert and a second delivery duct of the second relay valve is formed in the second guide body insert.