CATSING currently offers a selection of 90000 plus different hydraulic/transmission filter elements, including corresponding filter housings. The Catsing Filter includes a wide range of filters in single and duplex versions that many have considered the industry standard. They provide customers with a different kind of filtration, from tank-mounted return line or suction filters to in-line or flange mounted or manifold mounted pressure filters, to air breathers and suction strainers.What is the hydraulic system? The hydraulic system is composed of a network of hoses,valves,other components and piping which is mostly used in machinery. These systems can be very diverse and complex, but always work under the same principle: using an incompressible fluid under pressure.Major Types of hydraulic filters:Filtration is the only defense against wear once contamination is present in the hydraulic system. Each type of filter in the system is designed to perform a specific job:Suction Filter:removes the largest particles that may find its way into the reservoir; also known as strainers or safety filtersReturn Line Filter:removes the largest particles that may find its way into the reservoir; also known as strainers or safety filtersPressure Filter:designed to protect the most sensitive components at full system pressures.Our extensive cross reference will offer you with a high quality top performing option to expensive OEM brands. Hydraulic filters, dielectric fluid filters ,and many others are available through our extensive & highly trained sales and production staff.