Layered filter cartridge with internal bypass channels

摘要: A filter cartridge for a liquid-straining assembly designed radial flow-through, the having coiled body which surrounds perforated central sleeve and is axially confined between end discs, consisting of overlying layers two offset strips creped paper, protruding spiral edges being glued to while recessed opposite form bypass flow gaps interconnecting axial channel portions paper zigzag-shaped transverse depth-filtering action, when entry become clogged.