Rosedale’s new HL Series Filter Bags have up to 3 times the dirt holding capacity of standard bags at the equivalent micron ratings. HL bags are easy to install and remove, and require less room in storage and disposal. Because the dirt is caught inside the bag, contaminant wash off downstream associated with exterior surface loading filter cartridges is avoided. The HL Series bags produce excellent results when used as a pre-filter for membrane filtration and other fine filters.
These bags have 5 layers of filter material, each with 4.4 square feet of surface area. HL bags have a molded flange or stainless steel ring to ensure a positive seal with the filter housing. They are constructed with 2 gradient layers of polypropylene or polyester felt separated by a transfer/caking filter layer. The initial layer is for pre-filtration and the final layer is an anti media migration layer.