In-line disc filter is a filter, which is used in line where very low flow rates exist. This unit is only 1 inch in diameter and 1-3/4 inches long. Housings are sealed canisters of nickel-plated steel and contain 50 square inches of element over an inner support tube. It is rated at 8 gpm. Stainless steel wire cloth elements are cleanable by back flushing. These filters are used on lubrication and hydraulic systems.
In-line filters are used for flows up to 10 gpm. These filters are available in a wide variety of filtration sizes and are cleanable by back flushing. It is also available in both carbon steel and stainless steel. It is rated at 8 gpm and 10 gpm. Stainless steel wire cloth elements are cleanable by back flushing. Synthetic depth-type elements are for throwaway use, and give finer filtration.