Service Coupling BSAU138b:2000

The British Standard BSAU138a:1980 for ’C’ type couplings assemblies has been superseded by BSAU138b:2000, which addresses the concerns of U.K haulage industry, with regard to quality and compatibility of couplings currently in use. The new standard requires one piece couplings that cannot be readily de-assembled, and meets improved valve lift dimensions ensuring adequate airflow.