... oil, slurry , corrosive or with tiny particles of liquid. Air, no spark, can be used for flammable and explosive places. Medium ... , fuel, chemicals, acid and alkali.Operating Characteristics:1, air, no spark, especially suitable for explosion-proof areas;2, medium flow ... , gas consumption is low, mobile installation;4, medium export no pulse, no impact, even for the liquid;5, diaphragm use the corrosion ...