One way check valve (Backflow preventer)for extractor hood / Rückstauklappe für Dunstabzugshaube 100mm

This is an one way check valve for an extractor hood (Thanks Tachyon), with 100mm diameter. It has to be placed upright in the hose of the extractor.

I used copper wire for the axles, but you can use every other wire, that fits.



Good News (August.2020):

This Thing is now nearly 2,5 years installed in my kitchen and still works fine!