Modified aseptic front pull piercing valve assembly
A front pull piercing valve assembly attached to a flexible container, whereby; when the wall of the flexible container is pulled into contact with a piercing element in the assembly, the contents of the container are dispensed by piercing the wall of the container and liquid flows through the valve assembly and directly into a container or through flexible hose or another connection to be dispensed. The valve assembly is configured in such a manner that during use it is filed with the liquid being dispensed thereby preventing the liquid in the flexible container from being exposed to air, namely, oxygen that often causes spoilage of certain liquids, such as wine.
1. A method of assembling a front pull piercing assembly for a flexible container containing a liquid, the method comprising:
sealing a threaded plug at its bottom to a film of the flexible container;
fitting a threaded exterior of the threaded plug into a through internal passage of a spout assembly, the spout assembly having a sealing flange sealed to the film of the flexible container;
positioning a threaded collar having a threaded longitudinal internal passage in the internal passage of the spout assembly;
threadably engaging the threaded collar with the threaded exterior of the threaded plug;
positioning a circular piercing element within the through internal passage of the spout assembly such that the circular piercing element is engaged with the threaded interior of the collar, the circular piercing element having a circular piercing end with at least one piercing point transversely positioned in the longitudinal passage in close proximity to the film of the flexible container; and
disposing a valve body centrally within the threaded collar, the valve body having an outlet opening for dispensing liquid from the flexible container, an interior fitment having a valve that allows for flow of liquid from the flexible container when in an open position and forms a seal to prevent air from contacting liquid in the valve body and the flexible container when in the closed position, and a valve actuator having a valve stem for opening and closing the valve,
wherein the threaded collar is configured to be moved such that when the threaded collar is moved, the threaded plug moves away from the film, thereby bringing the piercing end of the piercing element into engagement with the film and piercing the film to allow the liquid from the flexible container to flow out of the container and through the longitudinal interior of the spout assembly and into the valve body,
wherein when the valve is in the open position, fluid is allowed to flow through the outlet opening of the valve body.
2. The method of claim 1 , further comprising providing the flexible container configured to receive a liquid to be dispensed.
3. The method of claim 2 , further comprising introducing the liquid into the flexible container.
4. The method of claim 1 , wherein the piercing element includes 3-10 piercing points.
5. The method of claim 1 , wherein the flexible container is comprised within a rigid container.
6. The method of claim 1 , wherein the flexible container is an aseptically filled container for liquids sensitive to oxygen.