PROTOK drainage pump stations (DNS) from RDE Engineering are compact, fully-enclosed fiberglass systems designed to collect, lift, and convey stormwater, snowmelt, and surface runoff from urban drainage networks and industrial sites. Influent arrives through an inlet pipeline and flows into the sealed receiving reservoir, where submersible pump units are mounted on automatic pipe couplings that slide along fixed guide rails — this arrangement allows pumps to be raised and lowered without personnel entering the wet well, dramatically simplifying installation, removal, and routine maintenance.
To safeguard the impellers against clogging, the inlet pipe can be fitted with a removable debris-catching basket or an in-line shredder that reduces solids before they reach the pumps. Pump operation is fully automated: the control panel monitors liquid level through float switches mounted inside the chamber and starts or stops pumps accordingly, with no manual intervention required.
The standard station includes isolating gate valves and non-return check valves on each discharge line, an internal access ladder and service platform, and a forced-air ventilation system. Station bodies are fabricated to Russian technical specifications TU 42.21.13-001-55212321-2020 / 42.21.13-011-55212321-2021, providing a certified basis for design approval.
Body diameters range from 1,200 to 4,200 mm with installation depths to 13.5 m; the stations handle flow rates up to 10,000 m³/h at discharge heads up to 120 m.
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