CONTROL VALVE Russian patent published in 2007 - IPC F16K11/02 F16K21/10 

FIELD: mechanical engineering.

SUBSTANCE: control valve comprises slide valve mounted inside the housing and spring-loaded with respect to the housing of the valve from the side of the faces. The outer surface of the slide valve is in part in a contact with the inner side of the valve housing. The passages for supplying/discharging and discharging of the fluid are mounted from both sides of the contact surface between the slide valve and inner side of the housing. The structure members represent the check valve spring-loaded with respect to the housing toward the inlet of the check valve and mounted on the outer side of the slide valve that connects/disconnects the passage for supplying/discharging of fluid and the passage for discharging fluid. The check valve is made of bushing for permitting longitudinal motion with respect to the housing. The spring of the check valve is mounted at its inlet. The space connected with the passage for discharging fluid is made at the outlet of the check valve and allows the fluid to flow from the passage to the outlet of the check valve. The outer side of the bushing of the check valve is provided with radial passages connected with the outlet passage. The inlet of the check valve is connected with the passage for supplying/discharging of fluid. The control chamber of the slide valve is connected with the passage for supplying/discharging of the fluid through the throttle having the switching valve and opening in the slide valve. The control chamber of the slide valve is defined by the face of the slide valve and inner side of the dummy cylinder locked with respect to the housing. The slide valve is provided with outer recess through which the passage for supplying/discharging of fluid is connected with the passage for discharging fluid when slide moves.

EFFECT: enhanced efficiency and reliability, reduced mass and sizes, and simplified structure.

4 cl, 2 dwg