... , Absorption, Aeration, Degassing, Desorption, Distillation, Stripping, Heat Recovery, Extraction, Various separation and absorption applications at atmospheric pressure and under ... Absorption, Aeration, Degassing, Desorption, Distillation, Stripping, Heat Recovery, Extraction.Material available: Carbon steel, stainless steel including 304, 304L, 410 ... ring (Dia.5/8", 1", 1.5", 2", 3", 4")