Description Yitong string wound filter cartridge adopts the cotton thread as the filter media. The cotton thread is winded around the PP core layer by layer, provides truely depth filtration. It has great dirty holding capacity and interception ability, which provides great sediment filtration effectiveness. It also has exceptionally high structural strength, therefore, it can withstand higher PSID and severe operating conditions. Feature 1 Fits all the standard housing 2 Low pressure drop,high dirt holding capacity and long service life 3 Loose outer layers and tight inner layers offers effective depth filtration