Zig zag filter element

摘要: The filter element of the present has a plurality wavy portions which are so arranged that make generally ring like structure. In order to reduce pressure drop when fluid flows through element, special shaped radial gaps. Namely, width first gaps, is formed within adjacent and connects with an inner space at center structure, increases from outer end thereof thereof. second gap, connected atmosphere, decreases Both axial ends covered adhesive sheet on layer cladded.