VALVE Russian patent published in 2017 - IPC F16K31/122 

FIELD: machine building.

SUBSTANCE: valve for use in combination with painting device, which includes valve body (12), valve spindle (32), which at first free end (36) outside valve body (12) holds sealing element (40) and installed with possibility to displace between closing and opening positions inside valve body (12). Valve spindle (32) includes at least first piston element (44) and second piston element (54), first piston element (44) is directed in first piston chamber (20), and second piston element (54) is directed in second piston chamber (22), which are limited by valve body (12). First piston chamber (20) and second piston chamber (22) are made with possibility to supply pressure fluid medium, respectively, so, that to first piston element (44) and to second piston element (54) force is applied acting in same direction.

EFFECT: first and second piston chambers (20, 22) via radial channels (82, 84) are connected to valve body (12) perimeter groove (80) located from outside.

9 cl, 2 dwg