COUPLING SYSTEM, IN PARTICULAR A COUPLING SYSTEM FOR PNEUMATICALLY CONNECTING A PNEUMATIC BRAKE SYSTEM OF A TOWING VEHICLE AND A TRAILER

摘要

The invention relates to a coupling system (K), in particular a coupling system (K) for pneumatically connecting a pneumatic brake system of a towing vehicle and a trailer, having a coupling head (1) with a coupling head housing (2). The coupling head housing (2) has at least one first coupling connection (2'), at least one second coupling connection (2"), and at least one insert recess (3) which is arranged in the coupling head housing (2) separately from the first coupling connection (2') and the second coupling connection (2"). The coupling system (K) additionally has a filter unit (10) which can be releasably inserted into the insert recess (3), and a part of the filter unit (10) provides a sealing surface (21) of a coupling connection (2") when the coupling system (K) is assembled.