Designed to deliver air clean, oil-free air for hospital, clinical and laboratory. With combination of such air purification assortments and automatic controls, completely dried and bacteria free can be supplied constant at 0.4 MPa / 4 Bar / 58 PSI line pressure. There are 6 types from 0.75 kw up to 5.5 kw commonly used. An appropriate one shall be selected according to the consumption prospect in the system planning.