FIELD: hydraulic power engineering. SUBSTANCE: device is used for connecting output parts of spillways and other pressure tunnels with downstream. Cylindrical gate provided with hydraulic drive is mounted onto tubular head which has conic reflector. Hydraulic drive is made in form of casing which may move in axial direction. The casing forms together with head and partition two spaces, each of which is connected by pipes, provided with adjusting valves, with space of head and branch pipes provided with adjusting valves, and with atmosphere. Operating with valves, pressure is forced in one space and gate may move. EFFECT: improved efficiency of operation. 2 dwg
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