Air Mattess Valve Flap (Mountain Designs Airlite 5.5)

This is a replacement for the little flap disc inside the valve of a Mountain Designs Airlite 5.5 camping air mattress, and probably will fit a bunch of others as well. They don't supply replacements, which cheeses me off, so I figure I might as well give it a go. Print in TPU, pull through the little hole in the center and then trim the 'tail' off so it doesn't get in the way. (I should point out: this doesn't have to make a perfect seal, it just prevents the air rushing out while inflating and then a second bung closes it properly once you're all set up. So don't worry if there's some layer lines or if the valve doesn't sit perfectly when there's no air pressure on it.)