SWING-CHECK GATE Russian patent published in 2011 - IPC F16K15/03 

FIELD: machine building.

SUBSTANCE: invention refers to accessories and is designed for shutting-off back flow of medium in pipelines. The swing-check gate consists of a case connected with pins with nuts. The latter connect inlet and outlet flanges. A ferrule with a circular rib is installed in the case. A seat is secured in an internal cavity of the ferrule. An eye with a disk is arranged in external grooves of the seat. Grooves are cut along edges of internal surface of the case. On the grooves on one end there is installed the ferrule with the circular rib, and a bushing is installed on another end. External end surfaces of the ferrule and bushing function as fender surfaces. The latter conjugate with response surfaces of inlet and outlet flanges.

EFFECT: raised degree of gate repair ability.

2 dwg