Description
The Wilo‑Flumen OPTI‑TR 50‑120 is a robust recirculation pump designed for wastewater treatment plants with high flow requirements. Engineered to transport sewage reliably between nitrification and denitrification tanks, it features a non‑clog propeller design and stainless steel investment‑cast construction for long service life under demanding conditions. Its IE3 energy‑efficient motor, combined with frequency converter compatibility, enables speed‑controlled, load‑sensitive operation that reduces energy costs in large installations. Flexible installation options, including lowering devices and screwless coupling, simplify handling and maintenance, while adaptability to different pipe diameters and flow rates ensures seamless integration into existing systems. Built for continuous duty, the OPTI‑TR 50‑120 delivers dependable performance in municipal and industrial wastewater applications.









