This is a custom made kit to fit aeration windmills. Includes instructions for Generation 2-4 Windmills and Electric aerators manufactured in Canada.
Includes a high-quality custom made diaphragm from Garlock, rubber washer (for windmills with serial #18278 and less) and three insert check valves.
Guaranteed to fit or your money back! And, at a price lower than the Original Manufacturer!