Cap insert for brake liquid tank of vehicle, has central cavity and peripheral cavities placed inside flat crown and communicated through communication holes, and air passage hole provided in central cavity at lower point

摘要

The insert has a central cavity (4) and peripheral cavities (6, 8, 10) placed inside a flat crown (2), where the central cavity has a conical lower part (16). The cavities are communicated through communication holes. The peripheral cavities are concentric to the central cavity. An air passage hole (18) is provided in the central cavity at lower point. The holes are located from 90 degrees to 180 degrees with respect to each other.