Compressed air-supply-system for a pneumatic system

The invention relates to compressed air supply system for supplying compressed air to a pneumatic system, comprising a compressed air input port, a compressed air output port and a vent port, a pneumatic main pipe arranged between the compressed air input port and the compressed air output port, a pneumatic vent pipe arranged between the compressed air output port and the vent port and connected to the pneumatic main pipe, a purge valve arranged in the pneumatic vent pipe for venting the compressed air supply system, comprising a first and a second purge valve port and a control port, a regeneration valve for controlling a regeneration flow of compressed air through an air dryer arranged in the main pipe, comprising at least a first and a second regeneration valve port, a governor valve for generating a pressure signal, comprising at least a first and a second governor valve port, and a first and a second pneumatic control pipe, wherein the first pneumatic control pipe connects the second regeneration valve port of the regeneration valve to the control port of the purge valve and the second pneumatic control pipe connects the second governor valve port of governor valve with the control port of the purge valve, wherein either the first or the second pneumatic control pipe is open. Furthermore, the invention relates to a housing, a method for manufacturing said housing, a method for controlling a compressed air supply system, a control-unit and a vehicle.