Wilo Brand 4105032 Star S 21F, Three Speed Wet Rotor Hydronic Circulating Pump, 115-Volt , 1/12 HP

$108.99 EA

In stock. Ship same day if receiving order A.M. Eastern Time.

SKU: W-4105032 Categories: , Tags: ,



Wet rotor circulation pump, with flanged connection. (Flange perpendicular to shaft). Pre-selectable speeds to adjust the capacity on “S” versions. Cast iron body for hot-water heating systems of all kinds, industrial circulation systems, cold-water systems and air-conditioning systems.


  • Suitable for any installation position with horizontal shaft; terminal box in 3-6-9-12 o’clock position
  • Three pre-selectable speed stages for load adjustment (“S” type only)
  • 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 Flange Set
  • Automatically Vented


  • Pump housing: Grey cast iron (EN-GJL200)
  • Impeller: Engineered Composite (PP – 40% GF)
  • Shaft: Stainless steel (Cr)
  • Bearing: Metal-impregnated carbon
  • 47717_PROD_FILE

Additional information

Weight7 lbs
Dimensions10 × 10 × 10 in


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