... slurry , corrosive or with tiny particles of liquid. Air, no spark, can be used for flammable ... .) Paint, glue, etc.; 2, paper industry: cooking liquid, bleach, paint, glue, etc.;3, the oil industry ... chemicals, acid and alkali.Operating Characteristics:1, air, no spark, especially suitable for explosion-proof ... no pulse, no impact, even for the liquid;5, diaphragm use the corrosion resistant material ...