1, Working Pressure: 7 Bar 2, Volume Flow: 3.2 m3/min 3, Diesel Air ... can supply drilling rig, air compressor, rock drill, the drilling parts, loader, excavator and diesel engine, and diesel engine complete equipment ... a best quotation.A, What is the working pressure ( Mpa, Bar, PSI)?B, What is the volume flow ( m3/min, CFM ... for you with your machinery equipment. Air Compressor 7 Bar Certification: