A vial assembly (14) for a dispensing system, comprising: a vial container (40) having a container body defining a vial opening (48) and a vial cavity (44) in fluid communication with the same； a cap (52) having a cap body fixed through said vial opening (48) to enclose said vial cavity (44), wherein said cap body defines a gas filter opening (66) to through said cap body, in which said filter opening (66) supports gas filter means (94) inside, in which said cap body further defines a product conduit (64) through it , wherein said plug (52) further comprises: an elongated conduit (68) including an elongated conduit body (74) defining opposite first and second open ends (70, 72) and an elongated conduit (76) extends in fluid communication between them, wherein said second open end (72) of said conduit (68) extends through said product conduit (64) of said stopper (52) and in sealed coupling with said body cap, characterized by: a first valve member (96) supported at one end (104) of the same by said first end (70) of said conduit (68)； and a second valve member (98) detachably attached to said first valve member (96) at an opposite end (102) of said first valve member (96), wherein said second member (98) The valve is activated by pressure and tends to a normally closed position and opens under fluid pressure, in which said first and second valve members (96, 98) are adjustable between a first orientation, in which the first member (96) valve is in a closed position ensuring the isolation of the fluid from said vial cavity (44), and a second orientation, in which the first valve member (96) is in an open position to place said cavity ( 44) of vial in open fluid communication with an inlet port of said second valve member (98).Un conjunto (14) de vial para un sistema de dispensación, que comprende: un contenedor (40) de vial que tiene un cuerpo de contenedor que define una abertura (48) de vial y una cavidad (44) de vial en comunicación de fluido con la misma； un tapó
