They cater to the Amish community that still use Maytag wringer washers and they are now having some parts made for them that are "after market" or not from Maytag. They carry the drain hose for a gravity drain. There won't be any threading on the end of the hose, but it looks exactly the same.
Here's their link; call their Customer Service number and ask for Kirby in the Service Department.
