- 15 August 2007 -

Ultra-Filter reduces pressure loss

Donaldson has introduced a new compressed air filter production series that, it says, can reduce pressure loss by up to 50%.

The Ultra-Filter features 'adjusting screws' which can decrease differential pressure and thus optimise the energy efficiency of the filter. The compressed air flow is guided into the filter element in a targeted manner, ensuring a turbulence-free, uniform flow of the filter medium - something which is new to the technology of compressed air filtration, Donaldson says.

The filter also features a new medium to repel oil and water at the surface, thus keeping a large cross sectional area available for the retention of particles and separation of liquid aerosols from the compressed air condensate.

The arrangement of the filter medium in the support sheath is also new, using a pleating process which builds on an optimization of the pleat height and the number of pleats. This guarantees the availability of a maximum possible flow surface, so that the pressure loss is kept at a low level, the company says. At the same time, the highest possible particle intake capacity is achieved because the media contains fleece from borosilicate fibres, which aids low differential pressure over the total filter service life.

www.donaldson.com