SHUT-OFF PRESSURE VALVE Russian patent published in 2017 - IPC F16K31/44 F16K1/00 E03D3/00 

FIELD: machine engineering.

SUBSTANCE: shut-off pressure valve has a body with a through channel, inlet and outlet branch pipes, shut-off element with a rod, shut-off element seat, pressure means for linear displacement of the shut-off element rod, and a return spring. The valve is additionally provided with a metal bellows chamber placed around the projecting part of the shut-off element rod. At that, the return spring is placed inside the bellows chamber. The outlet branch pipe is located in the side wall of the housing for passing the working medium flow from the housing through the bellows chamber. The pressing device is made in the form of pressure heel with hinged screw.

EFFECT: increased reliability of the shut-off pressure valve.

5 cl, 2 dwg