CONTROL DISK VALVE WITH RELIEF DEVICE Russian patent published in 2007 - IPC F16K39/04 F16K3/08 

FIELD: valving engineering.

SUBSTANCE: disk valve comprises pressure and drain spaces, unmovable seat with shaped peripheral ports and central passage mounted inside the housing, and slide valve provided with recesses and connected with the device for transmitting torque from the drive. The seat is in a contact with the slide valve. The sector grooves in the sealing surface of the slide valve define the intermediate chamber together with the surface of the seat. The valve is provided with the relief device mounted in the central passage of the seat from the side of the slide valve and interacts with it. The device is made of a stack of plates and plungers alternatively mounted one on the other for permitting cooperation and axial movement. The smaller diameter of each of the plunger enters the central opening of the adjacent plate. The surfaces of the plungers and plates define spaces. The spaces that underlie the plungers are connected with the drain space of the valve through the central passages. The passages are made in the plungers.

EFFECT: reduced sizes and mass.

3 cl, 7 dwg