{"product_id":"double-diaphragm-windmill-aeration-system","title":"Double Diaphragm Windmill Aeration System","description":"\u003cp\u003eThe Koenders Double Diaphragm Windmill Aeration System is our most powerful wind-driven aerator, built for larger ponds and sites that need more air or more than one aeration point. Its double diaphragm compressor feeds two airstones through a two-way valve, delivering bottom-up aeration that circulates the whole pond, prevents stratification and stagnant water, and helps stop turnover and winter fish kills, with no electricity and no chemicals.\u003c\/p\u003e\n\u003cp\u003eThe double diaphragm system suits larger or deeper ponds and lets you aerate two locations at once for better coverage.\u003c\/p\u003e\n\u003ch3\u003eFeatures and benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWind powered, with no electricity or ongoing energy costs\u003c\/li\u003e\n\u003cli\u003eDouble diaphragm compressor for larger ponds and higher air volume\u003c\/li\u003e\n\u003cli\u003eRuns two airstones through a two-way valve for wider coverage\u003c\/li\u003e\n\u003cli\u003eBottom-up aeration that circulates the full water column\u003c\/li\u003e\n\u003cli\u003eHelps prevent stagnant water, pond turnover and fish kills\u003c\/li\u003e\n\u003cli\u003eGalvanized tower and components built for harsh outdoor conditions\u003c\/li\u003e\n\u003cli\u003eBacked by a full 1 year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat is included\u003c\/h3\u003e\n\u003cp\u003eEvery Double Diaphragm system includes the windmill head with a 26 inch blade and tail box, a double diaphragm air compressor, two airstone diffusers, two foot valves, a two-way selector valve, and 200 feet of 3\/8 inch polytubing airline. Taller towers add stacking tower box sections:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 ft:\u003c\/strong\u003e 8 ft and 12 ft tower boxes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16 ft:\u003c\/strong\u003e 8, 12 and 16 ft tower boxes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 ft:\u003c\/strong\u003e 8, 12, 16 and 20 ft tower boxes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 ft:\u003c\/strong\u003e 8, 12, 16, 20 and 24 ft tower boxes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing your tower height\u003c\/h3\u003e\n\u003cp\u003eTaller towers reach cleaner, steadier wind, so choose based on your site. Open, exposed sites can use a shorter tower, while sites with trees, buildings or rolling terrain benefit from a taller tower to clear the turbulence. If you are unsure, contact our team and we will help you size the right system.\u003c\/p\u003e","brand":"Koenders Water Solutions Inc.","offers":[{"title":"12 ft","offer_id":42421660713015,"sku":"39021","price":2344.0,"currency_code":"CAD","in_stock":true},{"title":"16 ft","offer_id":42421660745783,"sku":"39020","price":2444.0,"currency_code":"CAD","in_stock":true},{"title":"20 ft","offer_id":42421660778551,"sku":"39013","price":2744.0,"currency_code":"CAD","in_stock":true},{"title":"24 ft","offer_id":42421660811319,"sku":"30090","price":3244.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0055\/3648\/1332\/files\/hf_20260729_165718_512fc11e-340b-49f7-83a0-5ae28ded7301.png?v=1787956727","url":"https:\/\/store.koenderswatersolutions.ca\/products\/double-diaphragm-windmill-aeration-system","provider":"Koenders Water Solutions - Canada","version":"1.0","type":"link"}