VALVE ASSEMBLY Russian patent published in 2013 - IPC F16K31/04 

FIELD: machine building.

SUBSTANCE: valve assembly for control of fluid medium supply from a high pressure header to a working chamber of the mechanism operating with fluid medium includes the main valve, an auxiliary valve, and electromagnet and a core. The main valve includes an element of the main valve with the seating on the surface and the seat of the main valve. An auxiliary valve includes an auxiliary valve element. The auxiliary valve opens before the main valve so that pressure on the main valve element can be balanced. The core is connected to the auxiliary valve element and has the possibility of being moved along the channel passing between the first position and the second position. The connection between the core and the auxiliary valve element has the possibility of ensuring the core movement from the first position to the second position without the corresponding movement of the auxiliary valve element. The core moves from the first position closer to the electromagnet when the auxiliary valve opens by means of forces applied through the connection between the core and the auxiliary valve element. The mechanism operating with fluid medium is described.

EFFECT: creation of the valve assembly that is capable of being opened quickly against considerable pressure difference, thus reducing the power consumption.

17 cl, 10 dwg