System for reciprocally blocking mechanical elements defining a pressurized compartment

A device comprising:

• a multiway valve applied to a base, wherein said valve is constrained to said base with an arrangement, said arrangement comprising:
• a first mechanical element;
• a second mechanical element, said first mechanical element and said second mechanical element defining a compartment for holding a fluid when said first mechanical element is connected to said second mechanical element;
• a first substantially annular seat provided in a first wall defined by the first mechanical element;
• a second substantially annular seat provided in a second wall defined by the second mechanical element, said second substantially annular seat being positioned substantially opposite said first substantially annular seat when the two mechanical elements are assembled, the second wall being positioned inside the first wall;
• at least one filiform element forming a reciprocal blocking member of said first and second mechanical element, said filiform element being inserted in a space defined by said first seat and said second seat;
• at least one forcing member, which is insertable into and extractable from a space defined between two opposed surfaces belonging respectively to said first and to said second mechanical element when said first and second mechanical elements are coupled to one another with said filiform element being introduced in the space formed by said first and second seat, the insertion of said forcing element forcing said first and said second mechanical elements to move one with respect to the other, said first and second substantially annular seats being shaped such that insertion of the forcing member in said space causes blocking of the filiform element between the two substantially annular seats.