Bauer breathing air compressor is the most reliable and dependable unit you can purchase in the industry . Bauer has been manufacturing high pressure compressors for over 60 years. All Bauer units will produce air quality of CGA Grade E breathing air suitable for the Fire industry, SCUBA, Military and Industrial use. USED IN MARINE ,TESTED OK FOUND IN EXCELLENT CONDITION. 3 PHASE WIRE CONNECTION,ELECTRICALLY DRIVEN POWERED