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Wilo Star 21 BF - 1-Speed Bronze Star Series Circulator
Suitable for drainback and closed loop solar systems

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Our Price: CAN$350.00 Exc GST/HST Bronze Body - wont rust!

Product Code: WILO31BF

Pump Flanges

Note: you do need to buy them from somewhere!, the pump needs to have a connection on it. You can buy flanges from other places if you dont want to buy them from us.
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Description Brochure
Wet rotor circulation pump, with flanged connection. (Flange perpendicular to shaft). Bronze body for domestic hot water applications

Wilo Pump Head Capacity

From the pump head chart above you can see the 32BF has a head capacity of about 33 ft and a max pump speed of just over 10 gpm. This is a good match to solar water heating systems. For a full description of how "head" and pump speed are related for solar hot water systems, please read this article. Solar Pumps - pump head and pump speed explained.

  • Suitable for any installation position with horizontal shaft; terminal box in 3-6-9-12 o'clock position
  • Impedance protected motor, motor protection not required
  • Cable entry both sides of terminal box
  • Quick connection spring clips for simple electrical connection
  • Steel Terminal Box
  • Fits all Competitor's Models
  • Powerful Starting Torque
  • Ultra Quiet
  • Reliable Wet Rotor Technology
  • Optional Check Valve
  • Automatically Vented

  • Pump housing: Bronze
  • Impeller: Engineered Composite (PP - 40% GF)
  • Shaft: Stainless steel (Cr)
  • Bearing: Metal-impregnated carbon