HYDRAULIC VALVE DEVICE Russian patent published in 2016 - IPC F15B13/42 

FIELD: machine building.

SUBSTANCE: hydraulic valve device is intended for hydraulic systems of different machines and mechanisms. Device (1) comprises an input port with discharge port (P) and drain port (T); the working port has at least working port (A, B); main valve (2) and compensation valve (3); note here that said compensation valve (3) is located between said pressure port (P) and pressure channel (4) connected with said main valve (2), wherein said compensation valve (3) forms a controlled passage opening between said pressure port (P) and above pressure channel (4). For this purpose, said compensation valve (3) is made with possibility of adjustment so that to provide connection of said discharge channel (4) with said drain port (t).

EFFECT: better controllability of compensation valve.

10 cl, 5 dwg