NON-RETURN VALVE Russian patent published in 2021 - IPC F16K15/06 F16K37/00 F16K1/12 

FIELD: valve engineering.

SUBSTANCE: invention relates to valve engineering, in particular to technological systems of the nuclear industry, and is intended for pipelines requiring a high degree of tightness relative to the external environment and operational safety. The non-return valve body is made in form of a shell and is equipped with inlet and outlet nozzles, which are fixed to the body by welding seams. A saddle body is connected to one of the branch pipes, in the latter a saddle is installed, which has possibility of contact with a plate connected to one of the ends of the guide rod. The guide rod is movable and equipped with a spring element. The second end of the guide rod is installed in a guide placed in the fairing connected to the rib in which the tube is installed to move the reed switch rod. One end of which is connected to the body of the magnet interconnected with the reed switch, the other is equipped with a roller. The body is connected by welded seams to the neck of the body and the flange of the body, in which the body cover is located, connected to the connector, made in form of a glass and equipped with a flange.

EFFECT: invention is aimed at protecting the valve from overload during automatic operation and increasing the tightness due to the accuracy of manufacturing structural elements.

1 cl, 3 dwg