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Parker Hannifin has launched the STF series of tank-top mounted return filters, which combine effective filtration with a cast steel filter head assembly.

The company said this makes the units ideal for marine and industrial applications where the use of aluminium is restricted in accordance to the latest regulations.

The STF filters feature ‘In-to-Out’ filtration to ensure contaminated oil cannot leak back into the system, and are capable of handling flow capacities of up to 500l/min at 10 bar working pressure.

This makes them suitable for severe return line applications, and reducing downtime due to filter failures.

The filters provide pre-filtration by means of a magnet column, improving fluid cleanliness levels and extending element lifetime by typically more then 20 per cent.

An effective flow bypass with low hysteresis reduces the bypass period and ensures only a small part of the total flow is bypassing the element, offering improved protection for the system.

In addition, multiple ports in the filter head are said to make it easy to integrate return line filtration into power packs, reducing cost and space.

The STF range can be customised to match the specific requirements of an application and facilitate integration.

This helps minimise initial costs and ensures effective filtration.

Optional airtight diffusers are available to avoid air ingress in the return line.

The funnels can be supplied with a customised length, ensuring an ideal oil-under-the-oil level and reduce the risk of foaming.

The filters are compatible with Parker’s LEIF elements, which minimise waste and reduce the environmental impact of a system.

These elements are said to provide guaranteed high-quality filtration in line with ISO 14001.

The STF series filters are said to be ideal for use in a range of applications, including marine power-packs, steel mills, mining equipment, and drilling machinery.

Atex certification means the STF filter can be applied in potentially explosive atmospheres.

Parker Hannifin — Parker Sales UK

With annual sales exceeding $10bn, Parker Hannifin is the world's leading manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of commercial, mobile, industrial and aerospace markets.

To meet its customers' needs in motion and control, Parker provides the broadest range of products available from any single supplier. This is supported by expertise in nine major technologies:

  • Hydraulics
  • Pneumatics
  • Electromechanical
  • Filtration
  • Process control
  • Fluid and gas handling
  • Sealing and shielding
  • Climate control
  • Aerospace

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