valve for a sawdust extraction system

I created a valve in two sizes for the (saw)dust extraction system in our workshop. It makes it possible to activate the suction for specific appliances without having to change the position vacuum cleaner.
The lid is secured from falling out using two short M3 screws and nuts.

It fits standard PVC drain pipes with an inner diameter of 40 or 50 mm (both sizes are available).

You can modify the fusion 360 source models as you like:
40 mm version: https://a360.co/2OXZQf4
50 mm version: h