... 1.Equipped with special vacuum pump(rating rotate speed=1400r/m,min rotate speed>800r/m, max suction lift>6m, ... with domestic leading technology big suction) oil and gas separation device, hydrosphere separator, vacuum pressure gauge, pressure vessel, pipe system ... vehicles. But the Sewage suction truck oblique liquid, can suck full alarm device after full automatic alarm, prevent sewage spills of ...