SHUTOFF VALVE Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention is designed for operation at high pressures of working media when self-sustained vibrations of shutoff member appear at decrease of flow rate. Shutoff valve has body with inlet and outlet branch pipes, shutoff member with rod forming inner space with body walls, and device providing opening of valve. Rod of shutoff member has magnetoconducting body. Valve body comprises electromagnet installed for holding shutoff member in extreme position when valve is opened. Invention provides reliable holding of shutoff member in open position with prevention of self-sustained vibrations at change of working medium flow rate. EFFECT: improved reliability in operation. 6 cl, 2 dwg