The SRL1 suction and return filter from Parker Hannifin is available with Parker's patented LEIF elements, which reduce disposal costs by over 50% due to their environmentally-friendly design.

The SRL1 suction and return filter from the Hydraulic Filtration Division Europe of Parker Hannifin, manufacturer of motion and control technology, is available with Parker's patented LEIF (Low Environmental Impact Filter) elements, which reduces disposal costs by over 50% due to their environmentally-friendly design. The SR1 is the most compact suction and return filter in its class, developed for mobile hydraulic applications where space restrictions apply. Parker's SR1 filter is a tank top mounted return filter capable of feeding filtered oil under positive pressure to the suction side of the boost pump, thereby filtering both open and closed loop oil systems through one filter.

This, together with the filter's compact dimensions, makes it a cost effective option for use with mobile equipment requiring both open and closed loop hydraulic circuits, from road sweepers to fork lift trucks.

By incorporating Parker's LEIF elements, the filter is made even more cost effective, as the elements' metal sleeves can be re-used leaving just the contaminated filter media to be disposed of as chemical waste.

The media is small and lightweight, and oil can be simply removed from the element, resulting in an even lower weight and volume, reducing disposal costs further.

Because the LEIF element is a patented design, the quality of filtration is guaranteed, avoiding the problems associated with pirate type products with unknown quality filter media.

The SR1 filter is capable of handling a return line flow capacity of up to 130 l/min and also includes a number of innovative features designed to increase efficiency and enable the problems associated with some suction and return filters from other brands to be avoided.

These features include a bypass valve in series with a back-pressure valve to minimise the risk of cavitation, an improved flow capacity emergency suction valve fitted as standard, and no direct bypass in the tank to remove the problem of oil foaming.