... 2.Prefessional & Specialize 3.Certification:ISO9001:2008 Rotary screw air compressor parts(Air filter, oil filter, oil/gas separater) 1 ... , service life of air-oil separator filter element is range from 3500h to 6000h, 4. Initial pressure differential ... air filter, oil filter, oil separator replacement for Atlas Copco, Ingersollrand, Sullair, Fusheng. Kaeser,Boge, GD.Hitachi.Cobelco and other compressor ...