Joint for fluid container

A joint for a fluid container to which a dispenser is connected, the container having a flexible bag having a neck portion that is open for pouring liquid;

• and an outer container that supports the neck portion with a mouth portion and that accommodates the bag,
• the fluid container comprising:
• a cylindrical plug held by the mouth portion, the cylindrical plug having a substantially cylindrical header portion protruding from a cylindrical bottom at a first end, a cylindrical portion fitting into an orifice of the neck portion at a second end, and a through hole penetrating from the first end to the second end;
• a liquid pouring tube having a collar portion fixed to a top face of the header portion at a first end, with a second end being inserted into the through hole, wherein the liquid pouring tube has a fluid passage extending from the first end to the second end, and wherein liquid in the bag is drained through the fluid passage;
• a first ventilating means for ventilating gas from an inside of the outer container to the mouth portion, wherein the first ventilating means has a plurality of first orifices provided to a bottom of the neck portion, the plurality of first orifices communicating from an inside of the outer container to an inside of the neck portion, and has a plurality of second orifices communicating from a perimeter of the cylindrical portion to the top face of the header portion;
• and
• a second ventilating means for ventilating gas from the inside of the bag to the mouth portion, wherein the second ventilating means has a plurality of third orifices provided to the collar portion, the plurality of third orifices communicating from the mouth portion to an inside of the through hole,
• the dispenser comprising:
• a socket main body having a cylindrical outer cylinder;
• a valve mechanism which is configured inside the socket main body, and which causes an
• axially penetrating duct to be discontinuous;
• a sleeve, which is held around an outer perimeter of an orifice side of the socket main body, and which has a releasably lockable locking mechanism to cover the header portion;
• and
• a means for receiving liquid distributed from the bag through a fluid passage of the liquid pouring tube and the duct of the valve mechanism, wherein the valve mechanism is biased to and adheres to the first end of the liquid pouring tube.