This series is a brand—new product designed according to the construction of its similar filters home and abroad. As a filtering device, it can be set 013 the equipments, which catry the media of oil, water and other liquid or gas, in the industries of petroleum, chemical, electrical power, water supply,etc. It also features high filtering efficiency, less pressure loss, rational structure and long working life. At present, it is widely use~l in many oilfields.