Natural gas filter is the indispensable medium pipeline, a device when the fluid is placed into the cartridge filter, its impurities by filter, and clean the air by the filter outlet, to protect the back end of the valve and equipment play an important role, when need to be cleaned, as long as the filter cartridge apart, remove the filter element, to reload after cleaning, It is very convenient to use and maintain. Widely used in metallurgy, chemical industry, petroleum, paper, medicine, food, mining and other gas fields.