For Gen 1 Windmills made nearly 30 years ago.
Has 8 holes that go around the perimeter of the diaphragm and comes with 2 disk valves.
Has 1 hole in the center of the diaphragm for the valve and then 3 holes for the screws.
Not sure what windmill maintenance kit you need?
Give us a call toll free at 1-877-888-7707.
