Parker bag filters are of a fully welded design rather than sewn. No process liquid can bypass through needle holes caused by the sewing process or around a sewn ring. This range of filter bags include standard filter bags (Available in polypropylene, polyester and nylon from 1 to 1000µm) and extended life bags, increased thickness of the filter media can increase lifetime by up to 5 times that of a standard bag. The filtration mechanism employed within filter bags allows high flow rates and high dirt holding capacity, this combined with low maintenance cost and quick change-out makes bag filtration an extremely cost effective means of liquid filtration. Bags are available to suit most common filter housings.