the present invention relates to a chassis of a sliding type or similar closure, comprising a body (pro) that includes:a base plate (10).a guide rail (12) of an opening secured to a sliding face (11) of the base, the rail is made up of two first and second side walls (14, 16) substantially parallel to each other and substantially at right angles to the face (11) of the base (10), at a distance, no no a d the other to define a space between the walls (18) of the rail (12), comprisingon top of it (80) is defined between the free ends of the first and second side walls (14, 16) opposite to those which are attached to the base plate (10), a rolling roller (81) of the enclips\u00e9 on both free ends of the side walls (14, 16) and between them.the body (pro), including:- the means of egress of fluid (19) in a sense, these means of egress of fluid in a direction including:a first hole (21) in the first wall (14), and a second orifice (22) in the second wall (16), the first and second holes are made so as to be arranged substantially in the face (11) of the base (10).* ways valve (30) mounted in the space between the walls (18) configured for fluid communication to a first direction (ps1) from the first to the second port (21) and (22), and to prevent the fluid communication in the second direction opposite to the first (ps2) (ps1)..La présente invention concerne un châssis de fermeture de type coulissant ou analogue, comprenant un profilé (Pro) ce dernier comportant :• une embase (10),• un rail (12) de guidage dun ouvrant coulissant, solidaire dune face (11) de lembase, le rail étant constitué de deux première et seconde parois (14, 16) sensiblement parallèles entre elles et sensiblement perpendiculaires à la face (11) de lembase (10) à une distance non nulle lune de lautre pour délimiter un espace inter-parois (18), le rail (12) comportant, en son sommet (80) défini entre les extrémités libres des première et seconde parois (14, 16) opposées à celles qui sont solidaires d
