Pressure Leaf Covers are used for filter aid type of filtration of edible / non-edible, castor, vegetable, palm, oils and various chemicals. They find applications in all oil & chemical industries to separate solid particles up to 5 microns in size. In most pressure leaf filters, a filter cover fits over a frame in a pressure vessel. The chamber is filled with slurry and pressure forces liquid through the cloth, into the leaf and out of the drain port.