Travaini double acting liquid ring compressor series SAO provides high pressures up to 155 PSIG. These compressors can provide oil free instrument air and oil free breathing air for medical industries, as well laboratories and pharmaceutical industry. SAO compressors produce cool and relatively dry compressed air with no after cooler required. The compressors require very little maintenance due to the absence of reciprocating parts such as pistons and valves. Use of complicated and expensive air purification equipment is not required. liquid ring compressors in conjunction with desiccant type air driers deliver quality breathing air for hospital applications.