We've been having a discussion at work, as we have installed (made for ourselves) a ***** cleaning unit.

the unit is sucking gas from the top of bottles or tanks, and certain people clain that if we leave the unit running at -30 water will follow the ***** gas and exhaust the filters and then make it's way to the tank of now "clean" *****.

In the beginning we ran the unit like this and sent a sample to be analyzed and got the answer back that it was cleaner than what the Official ***** cleaning company could do...

Now we have installed a suction pressure regulator on the unit... but my question is, does water in the system freeze into the liquid and then evaporate along with the liquid and follow the gas out into the system?