... meter changes the fluid contraction from center of the pipeline to the wall of the pipeline. Flowing rate will be ... dirt with self cleaning function;5.Important part not easy to wear, so that the equipment can keep long, stable ... gasesAll kinds of gases: hydrogen, helium, argon, oxygen, nitrogen; air content water/dustFlue gasSTEAM: Saturated steam, superheated steamLIQUID: Oil, fuel oil, emulsifying ...