Replacement Diaphragm fits Koenders Windmills

This universal 8-inch rubber diaphragm replacement is compatible with most older Koenders windmill pond aerators and EL2 models, though please note that check valves are not included. At Joe Mescan Windmill LLC, you can purchase authentic and universal pond aeration windmill parts, often at prices lower than the manufacturer’s retail cost. Additionally, if you are a former seller or dealer of diaphragm windmills with leftover parts, we encourage you to reach out to us at (440) 236-3278, as we may be interested in acquiring your remaining inventory.