FLOW RATE CONTROL APPARATUS Russian patent published in 2015 - IPC F16K1/04 F16K1/42 

FIELD: machine building.

SUBSTANCE: invention relates to valve industry and is intended to control the flow. Flow control device (10) ensures flow control of the work medium passing between pair of channels (12, 16) by movement of rod (24) with installed on it valve element (100) in axial direction. The said device (10) contains casing (18) with channels (12, 16) and seat (50) on which the valve element (100) seats. The rod (24) is screwed in entering the casing (18) during rotation. There is lock device installed in casing (18) and on rod (24), and which regulates rotation movement of the rod (24) in closed state of the valve, where the valve element (100) seats on the seat (50). The lock device contains first partitions (54a, 54b) located mainly parallel to the casing (18) axis, and second partitions (110a, 110b) created on rod (24) and located mainly parallel to the rod (24) axis. Rotating movement of the rod (24) is regulated by the first partitions (54a, 54b) abutment to second partitions (110a, 110b). Casing (18) and rod (24) are made out of polymer material.

EFFECT: increased reliability of device operation.

7 cl, 6 dwg