This International Standard specifies the main characteristics of two types (A and B) of connections used for checking response times and pressure levels for compressed-air braking equipment fitted on road vehicles. This International Standard also specifies the open space requirements that shall surround the pressure test connection and the protection against corrosion.
GSO ISO 3583:2007 history
2007GSO ISO 3583:2007 Road vehicles -- Pressure test connection for compressed-air pneumatic braking equipment