Galvanized - Double Diaphragm Windmill Aeration System

Like all of our products, our `bottom-up` windmill aeration systems are designed to last. Using only the power of the wind, our windmills pump life-giving oxygen into your pond. As the second step (reVIVE) in our proven, ecofriendly 3-step program, you can rest easy knowing your Koender`s Windmill Aeration System is taking care of your water - naturally. `Bottom-up` aeration systems compress oxygen directly into the water body from the bottom of the water column upwards. Airstone diffusers are used to create small micro-sized oxygen bubbles that dissolve into the water as they travel up towards the surface. Studies have shown that this way of transferring oxygen into water can be 8 -10 times more efficient than surface aeration. Independent engineering study done by ProfJ A. Gillies (B.E MSc, PEng, FEC) has shown that Koenders Windmill Aeration Systems transfer significantly more volume of oxygen into water compared to all other products on the market measured over a 30-day period, simulating one month of production.

• Pumps twice as much oxygen as the Single Diaphragm Windmill! The following design features allow for the highest amount of oxygen transfer in the industry, measured over a 30-day period:
• Crankshaft and Bearings: 1" turned, ground and polished steel crankshaft. Long lasting, heavy duty and durable sealed bearings.
• Streamlined, 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.
• Patented design and diameter allows for optimum performance in winds as low as 3-5 mph. 11T Piston Stroke: Engineered for the 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 strength to any tower height This design also discourages climbing of the tower.

DD windmills are designed for larger ponds, or moderate wind conditions, and can run up to three airstones off a single unit and can transfer up 50,000 cubic feet of oxygen per month into your water source.

• Capacity: Up to 50,000 cubic feet of oxygen per month at up to 3.0 CFM
• Turbine Type: Upwind
• Rotor Diameter: 65"
• Swept Area: 23.05 square feet
• Blade Design: Proprietary
• Transmission: Direct Drive
• Stroke: 0.5"
• Over-speed Protection: Automatic
• Start-up Wind Speed: 3 miles/hr
• Foundations Ground Rods; 1" Diameter Pipe, 4" Long, 3 Clamp Stake Pairs

Harness the power of the wind and save money on your energy bills with our windmill aeration systems. Our windmills are available in single or dual diaphragm models and made of the highest quality materials, ensuring years of worry-free aeration for your pond or dugout.

• Ideal for irregular shaped or ponds over an Acre
• High Quality & Built to Last
• Works in Low Wind Conditions
• Provides Bottom-Up Aeration for Your Pond
• Low Maintenance
• Easy to Assemble

Comes with 200 feet of Polytubing Airline, 2 Airstone Diffusers with Foot Valves, and a 2 way selector valve.

Single Diaphragm Windmill Aeration Systems come with 100 feet of Polytubing Airline and 1 Airstone Diffuser with Foot Valve.

Double Diaphragm Windmill Aeration Systems come with 200 feet of Polytubing Airline, 2 Airstone Diffusers with Foot Valves, and a 2 Way Selector Valve.

The type of windmill you need depends on the size of your pond:

Single Diaphragm: For smaller ponds up to one acre.

Double Diaphragm: For irregular shaped or ponds bigger than one acre.

The difference between single or double diaphragm? Double Diaphragm = Double Air Volume.

Size:
12` Windmill: $2,024.00
16` Windmill: $2,164.00
20` Windmill: $2,364.00
24` Windmill: $2,924.00