A IMPROVED INLET/OUTLET DEVICE

A improved inlet/outlet device comprises a plastic clamping ring (1), a plastic inside thread ring (2) and a protecting stainless steel ring (3), the interior diameters of the clamping ring (1) and the protecting ring (3) are bigger than the interior diameter of the inside thread ring (2), the clamping ring (1) is joined on the inside thread ring (2), the protecting ring (3) is joined on the inside thread ring (2), there has a gap (4) between underside of the clamping ring (1) and top of the inside thread ring (2). Adopting the structure of the plastic clamping ring and the plastic inside thread ring, the degree contact with the wall of the bag becomes higher, so it has good sealing and cheap cost, it is easy to expel the gas from the bag for liquid container. L'invention concerne un dispositif d'entrée/sortie amélioré constitué d'un collier de serrage en plastique (1), d'une bague filetée interne en plastique (2) et d'un anneau de protection en acier inoxydable (3). Les diamètres intérieurs du collier de ser