Filter Bags and Filter cartridges are both ordinary sediment filters.
They have the same essential function in the application that removes large or small particles from capture particles and sediment in the filter media when the liquid passed through the media layer. The media will capture any particles more considerable than the filter media pore size.
Both filter bags and filter cartridges have surface filter and depth filter way.
Surface filter means the capture of the particles on the layer of the media surface. Usually, it’s mesh filter media of filter bags and membrane media of filter cartridges.
The depth filter used a thick multi-layer media twisted path to capture the particles inside their textile construction.
Both filter bags and filter cartridges have higher flow capacity with larger micron sizes.
Many customers ask me how to choose a filter bag or filter cartridge and the difference between them.
Here I make a list of their difference and the idea of selection.
Filter bags are used in filter bag housings. Mainly in the application of chemicals, painting, oil-filed, food, beverage. It’s microfiltration for purity liquids.
There are mainly two types of filter media： mesh filter media and PP/PE needle punched felt media. Sometimes there will have PTFE, and Aramid Needle-punched felt media used in filter bags for some particular application.
Filter bags can filter a large number of flows while they are great works for a low cost.
Generally, the micron size for needle punched bags are 0.5 to 300μm. Mesh media bags are 1μm to 1500μm. Typically, filter bags usually work for bigger microns than filter cartridges.
Filter cartridges can work well in some industries that filter bags can’t work, such as cosmetics, pharmaceuticals, electric utilities. In addition, it works well on small particles remove, such as 0.1μm, and bacterial removal.
There are many filter cartridges in the market, from primary melt blown filter cartridges to membrane pleated cartridges. You can find popular cartridge types on our website.
Filter cartridges have various applications, and we can easily find one type of cartridge that meets our requirements.
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