Return Line Filters For Industrial And Mobile Use

Parker Hannifin's European Hydraulic Filter Division has launched a range of tank-top-mounted return line filters designed to increase productivity within the industrial and mobile sectors. The PT Series filters feature a fully integrated construction and provide a long service life, allowing users of hydraulic systems to realise enhanced profitability. Offering a nominal flow capacity of up to 400 litres per minute, while working at pressures of up to 10bar, the PT Series filters feature an efficient in-to-out filtration system.

This method uses pressure to extrude the return oil through the filter while retaining contamination. As a result, only clean oil enters back into the reservoir and all contamination is held within the filter element, increasing overall system performance and service life. The filter element and filter housing cover are integrated to form one consumable part, allowing for a compact construction that is simple to fit, particularly in applications where space is at a premium. The aluminium filter housing remains reusable, part-bolted on to the hydraulic reservoir.

For direct integration in plastic tanks, the complete element can be integrated as a screw-in part, eliminating the need for the tank-top-mounted filter head. The complete element unit can be rotated and pulled out of the plastic reservoir or tank-top-mounted filter head, facilitating filter changeover, while eliminating the need to reinstall loose components and reducing machine downtime to a minimum. In addition, this construction prevents dirty oil from dropping back into the tank as all contaminants are retained within the filter media, further increasing hydraulic system performance.

The new PT Series filters feature seals that cover the space between the filter element and the filter housing, offering maximum protection against oil leakage. This enables companies to comply with the latest environmental regulations while avoiding the high costs associated with contaminating the environment. In addition, when used in conjunction with Parker's standard and custom-built reservoirs and airtight funnels, air ingress is eliminated, creating an optimal oil flow path and resulting in improved system efficiency and reduced energy consumption.

The PT Series filters can be used by original equipment manufacturers (OEMs) and can be retrofitted into existing hydraulic systems. The patented construction of the filter elements protects the OEM aftermarket against piracy by eliminating the possible use of non-original filter components. As a result, not only is the quality of filtration ensured but end users can also benefit from an extended warranty on the entire unit, according to Parker.

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