Valve system for bicycle pump comprises valve sleeve connected to air channel sleeve so that cylindrical valve seal can slide in cavity, leaving annular air gap around seal, which seals front air channel

摘要

The valve system for a bicycle pump comprises a valve sleeve (1) connected to the air channel sleeve (2) so that a cylindrical valve seal (4) can slide in a cylindrical cavity (3). There is an annular air gap (5) around the seal and it seals the front air channel (6).