LSS 4 Strainer Filters

HiFlux LSS4 Strainer Filters have been developed especially for use as protection filters for distribution and transmission systems in the energy sector.

The filters are used to protect pumps, heat exchangers, valves, boilers, pipes, etc.

In the filter design importance has been attached to optimising the flow conditions in such a way that maximum capacity is achieved with minimum loss of pressure throughout the period of operation. This has been achieved by means of a special filter strainer design which ensures that retained dirt is not kept in or on the filter surface, but is deposited in the filter strainer. This leaves an active and open filter area throughout the period of operation, resulting in extremely low energy consumption and longer intervals between the need for manual cleaning. The efficiency of this function does, however, depends on the orientation of the filter.

The energy consumption for operation of the LSS4 filter is typically 25 to 35% lower than conventional filters and dirt collectors.

The filter is designed for installation in connection with pipe bends and can be supplied with a hinged cover facing in the appropriate direction.

The filter housing is manufactured in welded certified steel and de-signed for compact installation in systems with high pressure and temperature. The production process is covered by strict quality control which includes material tests with full traceability, continuous process tests, welding tests in accordance with production and design norms and hydraulic pressure testing according to EN 13445. EN 10204 3.1 material certificates, NDT report from welding tests and EC Decteration of comformity in accordance with PED directive 97/23/EC.

The filter strainer has been developed to resist powerful impacts from large foreign bodies which could be carried through the system at high speed. LSS4 is supplied as standard with 1 mm, 3 mm, 6 mm and 8 mm filtration. The strainer insert is fitted in a guide system, which ensures a positive seal between strainer and housing without leaks. It also makes handling of the strainer easier in connection with cleaning of the filter housing.

An air vent can be built into the side of the filter housing and makes it possible to connect it to a vent circuit which does not need to be disassembled when the filter is cleaned as the cover can be removed freely.

Special versions with regard to building-in, capacity, temperature and pressure can be made in co-operation with our design department. The filter is as standard manufactured according to PED directive 97/23/EC.

Capacity 63 - 5280 m3/h
Filtration 1 - 8 mm
Pressure 16/25 bar
Applications Industry

Product Specifications


Capacity: (as a pressure filter at a differential pressure of 0.1 bar and a viscosity of 1 cSt)

Additional information


30 – 2000 µm


16 bar


4,5 – 243 m3/h

You may also like…

  • LSS 1 Strainer Filters

    Capacity 42 - 1140 m3/h
    Filtration 1 - 8 mm (RF 0,5 - 8 mm)
    Applications Industry

I would like to know more

Find a HiFlux partners near you

HiFlux Filtration A/S has specialised in providing filter solutions for industrial purposes. The company offers more than 20,000 combinations within the range of standard filters. At the same time, numerous special tasks are solved – customised to the demands of the individual customers. Therefore, advise and problem solving are important activities of our company.

Find partners