currently since theres no way to draw the gases out of its input tanks, if you put the wrong gas into it, you have to destroy it and craft a new one because you just cant empty the input tanks

The Guage Dropper is the tool your are looking for to empty random tanks in the machines.

ah, I didnt know that thanks a bunch. I was getting frustrated because wrong fuilds/gass ended up in wrong machine and had to build new ones after that. closing this now.