Edible oils are generally derived from various oil seed sources including sunflower, soybean, corn, peanut, rape seed, and other vegetable sources. Crude (unrefined) oils may contain a variety of naturally occurring substances that are considered undesirable since they may have a negative effect on the final properties of the oil (taste, odor, color and stability). These substances, including proteins, free fatty acids, and phosphatides, are removed through a series of mechanical and chemical processing steps

Some of these process steps, such as bleaching, hydrogenation, and deodorization, can generate undesirable particles that must be removed to maintain the quality of the oil. Many edible oil processes employ conventional filter bags to perform this operation. While being relatively inexpensive in terms of “per-filter” cost, bag filters are known to have a number of demerits that escalate the actual cost of bag filtration. These demerits include - limited contaminant holding capacity resulting in frequent filter change-outs, cumbersome design making installation and removal difficult, and variable retention perfomance that affects oil quality.

DuoFLO filter system from CUNO specfically addresses these concerns. The unique element design easily retrofits existing bag filter housings, eliminating the cost of purchasing new filter housings. DuoFLO filter system from CUNO provides substantial operating benefits that include