PRESSURE LIMITING VALVE Russian patent published in 2019 - IPC B60T11/34 B60T17/18 B60T15/50 

FIELD: machine building.

SUBSTANCE: invention relates to the field of transport machine building. Pressure limiting valve comprises valve body, valve piston and pressure limiting spring. In valve body envisages valve inlet and valve outlet. Valve piston can occupy open position, in which valve inlet and valve outlet are connected to each other, and closed position, in which valve inlet and valve outlet are separated from each other. Valve piston has first piston ring with sealing surface and second piston ring. In closed position sealing surface of first piston ring is tightened to body ledge pneumatic force acting on the first piston ring and the second piston ring and directed towards force of pressure-limiting spring. In the valve piston there is a pneumatic transition for operation of the safety valve, due to which safety valve loaded with spring force is located on opposite side of second valve piston ring.

EFFECT: decreased overall dimensions and simplified design.

8 cl, 3 dwg