Ball Valve for 40mm tube Kugelventil DN40

I constructed this ball valve because I wanted to try this construction, another blast gate would work as well.

I had built a enclosure around one of my 3dPrinter. To print ABS for example, the air should go out of your room. On my youtube channel you can see my solution. in the upper right corner through a hole there goes a 40mm tube 2m to the ceiling of my room there is a outlet under the roof. Inside at the other end of the tube a 40mm noctua fan is switched by a temperature switch. Underneath my enclosure I had need for this blast gate to open or to close the cold air inflow if it is needed.

I wanted to control the fan by this Temp Module I found on amazon:
https://www.amazon.de/ZHITING-Temperature-Digital-Thermostat-Digitalanzeige-wasserdichter/dp/B08JPJWN84/ref=sr_1_5?crid=3K7SCMT066YIJ&keywords=zhiting+2pcs&qid=1641403408&sprefix=zhizing%2Caps%2C259&sr=8-5

or look otherwise for:
ZHITING XH-W1219 DC 12 V Temperature Controller Module Digital-Thermostat Dual LED Digitalanzeige -50~110℃ Mit 20A Relais wasserdichter Sensorsonde(RED+RED)

The front I put in a screen from acrylic glas.
(perhaps you'll take a cd-cover)
The parts are glued together - so it was much easier to print. For me the 0.3 - the worst quality was ok.

All the constructions in fusion 360 for my enclosure project you will find here in the next days.
Don't know if there is someone out in the world to need this too - enjoy!
perhaps you visit my youtube channel to find diy videos and perhaps you'll improve your german, like I do with english videos.

https://www.youtube.com/c/basteley

Thanks - bye-bye from good old Germany
Wolfgang Ley - Basteley