Koenders Water Solutions Inc.

KoendersFree Air Windmills

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A proven low-maintenance, low cost, highly effective method of maintaining water quality! Buy with confidence, knowing that Koenders Windmills time-tested design features increase reliability, performance and safety.

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  • Crankshaft & Bearings
    1″ Turned, ground and polished steel crankshaft. Long lasting, heavy duty, durable sealed bearings.
  • Steamlined, Large-Surface Blades
    Engineered for most efficient operation in low and high wind speeds.
  • Durable and Efficient Diaphragm
    Allows windmill to save energy but still produce maximum air volume and maximum longevity.
  • 1/2″ Piston Stroke
    Engineered for most efficient air production and maximum diaphragm life.
  • Large Tail
    The large surfaced tail area provides maximum control in all wind speeds and ensures efficient overall operation.
  • Strong Tail Arms
    Tail arm rigidity further ensures windmill control.
  • Top Mounted Compressor
    Top mounting and connected through a rigid pivot tube, provides smooth operation and mechanical longevity. Compressor top air valve assembly makes for very easy maintenance.
  • Pivot Tube
    Re-engineered to eliminate ice build up.
  • Tower Design (12′ – 16′ – 20′ – 24′ Heights)
    The strong, cross brace reinforcement design gives added strenght to any tower height. This design also discourages climbing of the tower.

Windmill Specifications

  • Capacity: Up to 1.5 CFM (cubic feet of air per min.)
  • Turbine Type: Upwind
  • Rotor Diameter: 65"
  • Swept Area: 23.05 sq. ft.
  • Blade Design: Proprietary
  • Transmission: Direct drive
  • Stroke: 0.5"
  • Overspeed Protection: Automatic
  • Foundation: 3 ground rods; 1" diameter pipe, 4′ long