Pressure line filters are designed to protect components in the hydraulic system. These filters are available for low(<50 bar), medium (50-250 bar) and high-pressure (>250 bar) capabilities.
They are usually in-line mounted but can also be manifold mounted if necessary.
Low-pressure models are generally of aluminium construction; medium & high pressure tend to be cast-iron & sometimes stainless steel. Micron ratings are usually 2-25 micron.