Wilo Stratos 50/1-9 (DE) circulation pump – 2nd piece

Wilo – premium German pump technology

Operating since 1872, Wilo, a premium German manufacturer, specializes in heating, cooling, and water technology pumps. Its electronically controlled devices support circulation adaptable to system requirements.

Stratos 50/1-9 – electronic circulation with DN 50 connection

DN 50, 280 mm installation length: adjustable circulation pump for larger heating, cooling, and building services circuits.

Key benefits

• Constant or variable differential pressure: operating mode can be adjusted to the network.
• Electronic speed control: circulation is adjustable depending on the load.
• Single-button operation: easily accessible on-site settings.

Manufacturer data – Stratos 50/1-9 PN 6/10

• Installation length: 280 mm; DN 50 flanged connection.
• Power supply: 230 V, 50/60 Hz.
• Maximum operating pressure: 10 bar.
• Medium temperature: −10…+110 °C.
• Characteristic curve limits: 9.1 m head; 29.0 m³/h flow rate. Separate limit points.

Documented list price of the new successor model

Stratos MAXO 50/0,5-9 PN 6/10, 2164588: 4,692.36 EUR net. The Dutch product page of Wilo list price excluding VAT; verified on: October 5, 2026. A new pump with factory thermal insulation casing; shipping and installation are separate.

The MAXO is a different, newer model. The manufacturer designates it as the replacement for the original Stratos 50/1-9; the price is not the exact new price of the old Stratos.

Technical source: Wilo original type datasheet; Stratos factory manual.

Brands available in the ProfiKazán assortment

AGRO Forst & Energietechnik, Alfa Laval, Austria Email, Binder, Biral, Buderus, Clima, Delphis-therm, EDER, Elco, Fröling, GEA, Gilles, Grundfos, Grünbeck, Guntamatic, HAPPEL / Ziehl-Abegg, Hargassner, HDG, Heizbösch, Herz, Hoval, Kampmann, Kränzle, KSB, KWB, LOOS, Lopper, Lowara, Mawera, Nolting, ORION / AL-KO, Picopello, Pneumatex, Pollhuber, Prüller, Reflex, Remeha, Ruwac, Schwank, Sieger, Siemens, Spanex, Varem, Viessmann, Wilo, Windhager, Wolf, YORK.

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