HIGH PRESSURE VALVE Russian patent published in 2012 - IPC F16K39/02 

FIELD: machine building.

SUBSTANCE: in valve body there arranged is gate with discharge channel of small cross section and radial holes for pressure drop equalisation at "inlet-outlet" of connection pipes with elastic ring as a seal; at that, gate is moved with a screw interacting with the body, and inside the screw there arranged is additional screw, with radial and axial holes for working medium passage, which interacts through pack of plate washers with shutoff needle that in its turn interacts with discharge channel, and on the other side the additional screw interacts with flywheel stock by means of a tip in which there made are axial and radial holes for working medium passage in order to equalise pressure drop at the connection pipe inlet and after screw; at that, stock is borne against thrust bearing.

EFFECT: improving reliability, service life and serviceability of valve when high pressure working medium is supplied in any direction.

1 dwg