Compressed air conditioning and treatment apparatus, devices and machines for air treatment consisting of units for the separation and deposition of solid and liquid contamination of the compressed air; [ air filtering installations; ] [ air purifying apparatus and air purifying machines *, namely, compressed air purifying apparatus and compressed air purifying machines * ; ] air dryers, namely, compressed air dryers; [ desiccant and adsorption dryers; ] refrigeration dryers [ and membrane dr...