VALVE-DISTRIBUTOR Russian patent published in 2003 - IPC

FIELD: main pipelines. SUBSTANCE: invention is designed to control flow of working medium in high-pressure mains at high flow rates. Proposed valve-distributor contains body with inlet and outlet holes, valve seats and shutoff member made in form of hollow of hollow cylindrical bushing and connected with drive and sealing units. Shutoff member is provided with projections. Said projections are made on its outer surface in plane of cross-section and are in contact with inner surface of body. End face surfaces of shutoff member and valve seats are made in form of reverse truncated cones. EFFECT: reduced forces required for shifting shutoff member, improved stability in operation. 5 cl, 3 dwg