One way air valve / flap for vertical pipes

thingiverse

This is one way air flap for VERTICAL air pipes with diameter 150mm. Usefull to put into kitchen digester air pipe, to prevent blowing air from outside to inside of home. Its build from everything, you can find at home: - silicon pad from kitchen - 10x2 and 16x2 screws with nuts - screw lock glue - foam window gasket, that shrinks to 1mm (thats the tolerance berween valve outside ring, and pipe inner diameter) You can use a screw, and a magnet to create a lock force, and also adjust the power of the lock force. In my case it was not needed, as the weight of the flap creates enough of force, to lock the whole valve. No special print setting, use support for 90dg overhangs only. I suggest to remake the main ring, and change its diameter for another -2mm, for easier installation. The photos of original flap are included.