... 2application: HFO/LO/DO 3.remove water and impurities 4.automatic control the process (1)DA-XXX-S/O is a dual ... sets single separator units into one base to realize auto control)with two centrifugal machines ,filters,stainless steel palte heaters,auto ... temperature control executor,triple valves,oil feed pumps,sludge oil pumps,solenoid ...