... and computer technology. portability and reliability, they have been widely used in many fields of petroleum, chemical industry, energy, foodstuff, ... 2)Basic technical performance Applications Gas: air,carbon dioxide,oxygen gas,nitrogen, coal gas,natural gas,methane and other chemical gas.Liquid: water,high-temperature ... of flow speedLiquid(water):0.25M/S~9.5M/S Gas:4M/S~78M/S Vapor:3M/S~78M/S ...