FIELD: hydraulic and power plants. SUBSTANCE: proposed valve has two connecting members with shut- off unit located between them; shut-off unit has seat and shut-off member engageable with it; seat has outer ring and inner seat of valve located on both sides distributing passage connected with one connecting member. Inner seat surrounds hole connected with other connecting member through connecting passage. EFFECT: simplified construction at high flow rate of medium. 9 cl, 2 dwg
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