HYDRAULIC CHECK VALVE Russian patent published in 2024 - IPC F16K15/02 F16K27/00 

FIELD: machine building.

SUBSTANCE: invention relates to general machine building, in particular to pipeline valves, and namely to hydraulic check valves with guided rigid shut-off elements. Hydraulic check valve comprises housing 1, which has inlet axial channel 2, changing into a row of transverse outlet holes 7, slide valve 4 interacting with seat 3 and spring 5. Slide valve 4 is made with conical surface 9 in contact with seat 3. Housing 1 is additionally equipped with plug 8 installed by means of a threaded connection in the internal channel of housing 1. Plug is fixed relative to housing 1 by locking element 11, between which sealing ring 12 is installed. Valve mounting thread is made on the side of inlet axial channel 2 of housing 1. Hydraulic check valve is built into hydraulic plate 13 with pre-installed seals 14 and 15 of different diameters to seal the inner cavity of hydraulic plate 13 and by means of a threaded connection installed in hydraulic unit 16.

EFFECT: invention makes it possible to provide the possibility of using the installation of the shutoff valve with provision of reliable closing of the pressure channel in structures in the form of hydraulic plates.

1 cl, 2 dwg