Shield gates and penstocks with manual drive, with electric drive and without drive, , shandors (shield gate without drive), are designed to close off trays, openings in chambers, to close off sumps in case of repair, as well as in emergency situations.
The gates are installed in sewage treatment facilities (primary and secondary radial settling tanks, grate building, pump houses, methane tanks, etc.), manufactured version of category I according to GOST 150150-69..
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