VALVE SEAT APPARATUS FOR USE WITH LIQUID VALVES Russian patent published in 2018 - IPC F16K1/42 F16K3/24 

FIELD: machine building.

SUBSTANCE: device includes a seat ring having a central passage therethrough and an outer wall, outer wall comprising a threaded portion for securing a liquid valve cage, the threaded portion having a first diameter; a sealing portion for fixing the seal assembly between the sealing portion and the surface of the liquid valve body and for accommodating the extension of the cage, the outer surface of the sealing portion being adjacent to the extension of the cage, the sealing portion having a second diameter larger than the first diameter, and a bevelled end located between the outer surface and the second stage of the sealing portion; and a portion with a protruding edge for fixing the sealing assembly between the cage and the portion with the protruding edge, wherein the portion with the protruding edge extends to the surface of the body and the sealing portion is disposed between the portion with the protruding edge and the threaded portion, the portion with the protruding edge having a third diameter larger than the second diameter.

EFFECT: disclosure relates generally to valves and, more particularly, to valve seat apparatus for use with fluid valves.

19 cl, 7 dwg