Portable filter unit for marine hydraulics

Compact, mobile and versatile

Stauff has developed a compact portable filter unit for the mobile filtration of decentralised on-board hydraulic systems. It can easily be transported to the place of use, even in confined spaces. In addition to the version for 50 Hz power supply on land, there is also a new version for the 60 Hz on-board electric supply system.

There are various decentralised hydraulic systems on board ships. The use of mobile filter units may be necessary with these systems for maintenance work or to support the integrated filters. Stauff has developed the filter units type SMFS-P-015 specifically for this application. They feature very compact dimensions and are portable rather than on wheels, as transport across several levels or through hatches and space saving storage are crucial criteria on ships.

The high quality gear pumps in the units have good suction behaviour to pump fluid media through the Stauff filter element with a viscosity between 10 and 400 centistokes. The pumps are driven by energy-efficient three-phase motors (class IE2). A pressure switch prevents damage to the components, e.g. when lines become blocked. A washable stainless steel mesh filter is fitted in the suction line to provide the best possible protection of the pump against the negative effects of coarse contamination.

Drives for on-land and on-board electric supplies

The portable filter units are available with two different drives. The 50 Hz version is suitable for on-land power supply, while the 60 Hz drives can be supplied by the on-board electric system. In both cases, the combination of compact dimensions and high performance provides the basis for universal and highly flexible use on board, especially as the units can be equipped with all common spin-on cartridges from the Stauff range with filter grades from 3 to 125 micrometres. The visual contamination indicator on the filters allows the filter elements to be replaced as necessary.

Cleaning of hydraulic and lubricating oil

The units can be used to efficiently clean hydraulic systems as well as lubricating oil systems on mineral oil basis. They are not just suitable for preventive maintenance and servicing of the marine hydraulics – whether during maintenance work, for temporary support of the integrated filters or as bypass filters on large-volume systems. Equipped with a suitable empty element, they are also used for draining and transferring the contents of containers.

A suitable filtration device is also useful for filling hydraulic systems with fresh oil. This is because fresh oil can usually not be designated as pure, as it is rarely fine-filtered during production and processing and particles can additionally be introduced during filling, transferring and transport (e.g. in reconditioned barrels).

This provides service personnel on ships and maintenance service providers with a highly flexible system for on-board purification of hydraulic and lubricating oil systems. The robust design of the filter units ensures a long service life even under high strain.