Throttling device for outlet opening in liquid memory space for effluent retention basin, has stationary pressure and stationary tension springs that are cooperated with double-armed lever using lift force of float against spring force
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Device, useful for retention of solids e.g. toilet papers entrained in effluent of combined sewer system at overflow threshold of rain overflow structure, comprises calculation grid having screen bars, scraper comb, and paddle wheel drive
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Apparatus for removing soil sludge deposits
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Rotary brush screen at an overflow sill of a rainwater relief system
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Shut-off device for a waste-water inspection chamber, comprising a shut-off element with a magnetic lock
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Shut-off device for a sewer control shaft
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Shutting-off device for waste water control shaft has magnetic lock to hold blocking element after outflow in blocking position against inflow aperture
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Device for the surge flushing of sewers
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Surge rinsing device, for cleaning drainage channel, uses float mechanism for releasing rinsing flap when water level held behind latter reaches given level
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Procedure and device for edge round rounding and for deburring from below comprises flow around the edge with a erosive liquid
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Device for rinsing drains
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Sewer flusher
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Sewer washer
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Flush feed for rain drain has flush opening closed by flap with chamber connected to stored fluid volume
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Device for the retention of floating substances on a hold-up threshold of a rain relief system
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Outlet from rain-water tank with throttling device - is actuated by float and lever connected to slotted cam
