FIELD: hydraulic engineering.
SUBSTANCE: device is characterized by the fact that end section 2 of pressure pipeline 1 is rigidly mounted in support plate 3 installed at the bottom of the channel and is oriented vertically, wherein the outlet section of end section 2 is located in chamber 4 formed by closed flexible movable walls 8, made of elastic material capable of changing its dimensions in vertical direction. Lower ribs of walls of chamber 4 are attached to support plate 3, and upper ribs of walls are installed horizontally and are equipped with floats 7, connected with vertically installed supports 11 through lugs 13 with possibility of vertical movement.
EFFECT: due to prevention of reverse flow of water at emergency stop of the pump, the device will provide higher reliability of the device operation.
1 cl, 3 dwg
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