Wilo Star S 21 RFC, 3-Speed Cast Iron Star Series Circulator


Wilo Star S 21 RFC, 3-Speed Cast Iron Star Series Circulator – circulating pump for hot water and glycol PEX tube radiant floor

  • Description

    Wilo Star S 21 RFC circulator pump incorporates a cast iron housing, three speed motor (Low/Med/High) and a built-in, removable check valve. Wilo Star S 21 RFC is among the most popular and most versatile circulator pump models on the market. Pump’s performance parameters cover nearly all traditional heating applications – from radiant and baseboards, to fan coils and zoning and many others. 3 speeds allow to set up the circulator pump in a way, that matches the system’s requirements, while wet rotor design allows it to be virtually silent while operating.


    • Built-in motor protection for longer life and better performance.
    • Suitable for a wide range of applications, including radiant heating, hydronic heating, fan coil heating,
    • solar and other system types.
    • Whisper-quiet operation for sound sensitive installations.
    • Includes (2) Gaskets (O-rings).
    • UL/CSA listed.


    • Closed loop radiant heating & snow melting systems.
    • Baseboard/Radiator/Fan coil heating and other hydronic heating applications.
  • Additional information

    Weight 3.5 kg
    Dimensions 15 × 19 × 17 cm

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