Air and gas

In the back: the blue-coloured compressed airsystem.
In the middle: the storage vessel, at left is the casing with the compressor and at the right is the box with two dryers.
Compressed air is used as instrument air: driving pneumatic controllers and regulating them.
It has to be dried to prevent the system from corrosion.
In front: part of the yellow coloured gassystem with a big pneumatic controlled shut off valve at the right and a hand operated crossover valve.

Here in LARGE....