THROTTLE-CONTROL VALVE Russian patent published in 2007 - IPC F16K1/44 F16K47/04 

FIELD: valving systems.

SUBSTANCE: throttle-control valve comprises housing provided with inlet and outlet branch pipes connected with the space. The space is defined by the sleeve connected with the housing. The bottom of the sleeve faces the inlet branch pipe provided with two rows of the seats and slide valve connected with the rod. The slide valve is made of the hollow bushing with throttle openings provided in its side. The side is connected with the valving member having two sections for cooperation with the seats of the sleeve. The slide valve is set in the sleeve for permitting overlapping of the openings in the seat when the valve is closed and for permitting by-pass of the fluid through the openings in the hollow bushing when the rod is in the other positions. The valving member is dumbbell-like. The first section of the valving member is connected with the rod and is positioned outside the sleeve, and the second section of the valving member is mounted inside the hollow bushing for permitting overlapping of the openings in the seat when the rod moves in one direction. The second section of the valving member is made of two conical members. The tops of the conical members points in the directions of the fluid flow.

EFFECT: enhanced reliability.

4 cl, 2 dwg