MULTIPURPOSE VALVE Russian patent published in 2009 - IPC F16K1/44 F16K39/02 

FIELD: machine building.

SUBSTANCE: valve contains a body with inlet and outlet channels, in body there are located gates: controlling connected to rod moved by drive, multipurpose connected to rod and located in it elastic packing washer and additional gate - the end of rod. Shutoff gate is located concentric in bottom part of regulating gate forming annular channel connected by radial channels to its internal cavity. Saddle of additional gate is implemented in shutoff gate which allows axial channel. Saddle of shutoff gate is located under adjusting saddle. In the bottom part of shutoff gate it is implemented hollow in which there are located two elastic sealing elements compressed by spring through intermediate pressure ring with radial openings. External elastic sealing element is implemented from the material of more soft and elastic than internal, for instance from rubber. Internal contacting to rod from more rigid, for instance from fluoroplastic. Shutoff saddle is implemented from two parts between which it is formed cavity in which it is located elastic sealing ring. This cavity is connected to outlet branch pipes.

EFFECT: higher reliability and durability of valve operation.

2 cl, 2 dwg