08-11-2020, 01:23 PM
It looks like these units must have a pair of mesh trays of crystals in them that switch as they absorb the nitrogen. There must be an outside exhaust pipe to take away the nitrogen away during the purging cycle.
These units must have got to the stage where they are cheaper than the diesel used to lug cylinders about.
These units must have got to the stage where they are cheaper than the diesel used to lug cylinders about.
