VALVE DESIGN FOR KEG PET Russian patent published in 2018 - IPC B67D1/08 B67D1/12 

FIELD: packaging industry.

SUBSTANCE: invention relates to the sealing designs for tanks made of polyethylene terephthalate (hereinafter keg PET) mounted on the necks of the keg PET for filling, storage and transportation of drinks located in the keg PET under pressure. The valve design for the keg PET comprises a lid with a central hole with a connection means with the keg neck, a hollow rod, a valve element, a spring, a ring nut. The first end of the rod is made open, and the second one is made closed with an annular protuberance, in the rod generatrix there is at least one window, the valve element is mounted on the rod with the possibility to move along it, the central hole of the valve element is equipped with an annular protuberance adapted to interact with the annular protuberance of the rod and the annular protuberance on the outer surface, adapted to interact with the valve element, and the spring is installed between the valve element and the ring nut. The lid is made in the form of fungus and is connected to the ring nut by the threaded connection for direct installation of valve design on the keg neck, at the bottom of the ring nut there are holes for the gas passage, an annular gasket for sealing the connection of the lid and the keg neck is located between the upstand and cylindrical surface of the lid fungus leg, and the valve element is adapted to perform the function of the safety valve and actuation indicator made of polymeric material with Shore hardness of 40-60 units.

EFFECT: according to the invention the design has a high reliability and tightness with the possibility of performing the function of a safety valve when the overpressure inside the keg PET exceeds the maximum allowable value.

6 cl, 5 dwg