VALVE WITH CONTROL FUNCTION Russian patent published in 2012 - IPC F16K1/52 F16K1/46 F24D19/10 

FIELD: machine building.

SUBSTANCE: proposed valve comprises cone 9 interacting with valve seat 10. Said valve elements interact also with veil 12. Valve seat 10 makes as a part of backup ring that double as a combined sealing element. The latter seals cone 9 and valve body 1 at a time. Cone 9 has cylindrical section with cutouts. Veil 12 in valve body 1 makes a screen-wall. Its serves to surround seat and cone to constrict maximum flow via valve, and may turn relative to valve body passage 13 and control the flow through valve. Veil bottom edge features the shape of staircase. This shape allows sequential increase in flow. Flow is controlled by varying pressure drop in measuring nipple 2 on valve inlet side 5 and on appropriate measuring nipple 2 on valve outlet side 6.

EFFECT: higher reliability of operation.

15 cl, 5 dwg