BELLOWS VALVE Russian patent published in 2021 - IPC F16K41/10 F16K1/02 F16K51/02 

FIELD: valve engineering.

SUBSTANCE: invention relates to valve engineering, in particular to technological systems of the nuclear industry, and is intended for shutting off and regulating flows in pipelines requiring a high degree of tightness relative to the external environment. The housing is interconnected with one of the ends of the cover, made in the form of a stepped bushing, connected to the housing with a locking washer and pairs of threaded connections. The second end of the cover is connected to the rack by means of an additional flange, on which an additional locking washer is installed, connected by additional pairs of threaded connections. The rack is made in the form of a stepped bushing on the outer and inner surfaces. Inside the rack, there is a stroke position indicator, a lining ring that can contact a threaded bushing made in the form of a cup, equipped with a stepped outer surface, on one of the steps of which there is a bearing fixed by means of a mounting nut fixed with pins on the rack. In the blind hole of the threaded bushing, a running bushing is placed, connected to one of the ends of the stem. The second end of the stem has the possibility of contact with the thrust plate and is connected by means of a threaded bushing with a slide valve with a surfacing and a seat. The stem is made as one-piece and stepped. The body is equipped with a plate.

EFFECT: invention secures a high degree of tightness relative to the external environment.

2 cl, 2 dwg