... when opening the cover to clean the filter can be.Technical parameters;Working pressure :0.6-22MPaMedium: oil, water, ... materials in a chemical, petrochemical production, such as: water, ammonia, oil, hydrocarbons, etc.;b, the chemical production of corrosive ... , cooling in the low-temperature materials, such as: liquid methane, ammonia, liquid oxygen and a variety of refrigerant;d, light food, ...