Becker Windmills Four-Legged Wind Driven Aerators

Let Mother Nature aerate your pond!

This windmill tower looks more like traditional farm windmills and is more stable than the three-legged units. This unit also pumps a large volume of air and has high pressure capability due to large head size for deeper ponds. One-piece welded steel hub secures easily to windmill. Windmill aerators can save $30 to $50 per month in electrical costs, paying for themselves in a few short years.

• Stable, four leg design
• Long-lasting, reinforced neoprene diaphragm
• 6' diameter head with 12 blades operates in wind as low as five miles per hour
• Produces 2.4-5 cfm (depending on air speed) for ponds up to 40' deep
• Over speed protection - tail section will turn head in high winds preventing over spinning
• Includes 48" long anchor stakes
• Maximum pressure of 30 psi
• Hinge kits included with 16' and 20' units
• Can effectively aerate ponds up to two acres depnding on shape and depth
• Windmills can sit up to 1000' away from pond's edge - use poly tubing
• Ideal for aerating remote ponds with no electricity nearby
• 5 Year Limited Warranty

BWM12W 12′ Four-Legged Windmill Assembly with Quick Sink Tubing

Four Leg – High Volume Windmill Pond Aerator

• Includes 50′ of poly tubing, 100′ of Quick Sink tubing and dual head Quick Sink diffuser (QS2)
• Windmill pumps 2.9 CFM @ 9 MPH wind, up to 5 CFM in higher winds!
• 4′ – 4″ square base footprint, 15′ overall height
• Can ship via FedEx/UPS ground – ships best via LTL when available
• Optional Red Stripe Kit - select from dropdown menu.
• Dimensions: 15 ft Overall Height

BWM16W 16′ Four-Legged Windmill Assembly with Quick Sink Tubing

Four Leg – High Volume Windmill Pond Aerator

• Includes 50′ of poly tubing, 100′ of Quick Sink tubing and dual head Quick Sink diffuser (QS2)
• 6′ diameter head with 12 blades, tapered blade design allows windmill to turn in low wind and yet produce large air volume in high winds.
• Windmill pumps 2.9 CFM @ 9 MPH wind, up to 5 CFM in higher winds!
• NEW FOR 2020! Hinge kits included with 16′ and 20′ units - for easier installation and maintenance
• 5′ – 8″ square base footprint, 19′ overall height
• Can ship via FedEx/UPS ground – ships best via LTL when available
• Optional Red Stripe Kit - select from dropdown menu.
• Dimensions: 19 ft Overall Height

BWM20W 20′ Four-Legged Windmill Assembly with Quick Sink Tubing

Four Leg – High Volume Windmill Pond Aerator

• Includes 50′ of poly tubing, 100′ of Quick Sink tubing and dual head Quick Sink diffuser (QS2)
• Windmill pumps 2.9 CFM @ 9 MPH wind, up to 5 CFM in higher winds!
• NEW FOR 2020! Hinge kits included with 16′ and 20′ units - for easier installation and maintenance
• 7′ – 0″ square base footprint, 23′ overall height
• Can ship via FedEx/UPS ground – ships best via LTL when available
• Optional Red Stripe Kit - select from dropdown menu.
• Dimensions: 23 ft Overall Height

BWM20DLX 20′ Four Legged Windmill Assembly with Quick Sink Tubing

Four Leg – High Volume Windmill Pond Aerator

• Deluxe Kit Includes 50′ of poly tubing, 200′ of Quick Sink tubing, 2-way air splitter and 2 single head Quick Sink diffusers (QS1)
• Use for larger ponds, odd shaped ponds or two smaller ponds
• 6′ diameter head with 12 blades, tapered blade design allows windmill to turn in low wind and yet produce large air volume in high winds.
• Windmill pumps 2.9 CFM @ 9 MPH wind, up to 5 CFM in higher winds!
• Over-speed protection – tail section turns head 12° – 15° away from wind to protect in high wind conditions
• Includes 48″ long anchor stakes
• NEW FOR 2020! Hinge kits included with 16′ and 20′ units - for easier installation and maintenance
• 7′ – 0″ square base footprint, 23′ overall height
• Maximum pressure of 30 psi
• Optional Red Stripe Kit - select from dropdown menu.
• Dimensions 23ft Overall Height

Owner's Manual

More Information

QuickSink Diffuser Installation Instructions

Replacement Diaphragms

Windmill Freeze Control

Windmill Hinge Set

Striping Kit