MULTI-PURPOSE VALVE Russian patent published in 2015 - IPC F16K39/02 F16K47/02 F15B13/01 

FIELD: machine building.

SUBSTANCE: multi-purpose valve contains a body 1 with two actuating channels 2 and 3, in its bore hole a guide bush 4 and seat 5 with sealing bevel 6 and central throughput hole 7 are installed, and shutoff-regulating element 8 with coaxial guide cylindrical part 9, shutoff bevel 10, regulating tail 11 and stock 12 are located, the stock end projects beyond the body 1. In the multi-purpose valve the seat 5 is made tubular. The regulating tail 11 is made as ring piston with throughput radial holes 14 located in the ring clearance between the external cylindrical surface of the seat 5 and internal cylindrical surface of the bush 4 creating drainage cavity 16. Diameters of the cylindrical surfaces of the shutoff-regulating element 8 comply with system of inequalities.

EFFECT: simplified design, decreasing of axial overall dimension, increased workability, and increased overhaul life of multi-purpose valve.

2 cl, 1 dwg