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High Pressure Filters

The FSSTH series of stainless steel filters has been developed to meet the demands of process air/gas and liquid filtration requirements. They are effective at removing solids from water, chemical, petroleum and other industrial processes via a specially selected ceramic element.

Filter Elements

Filters are fitted with porous ceramic elements of controlled pore size in a range of grades as detailed in the PDF version of this page:


  • High pressure capabilities
  • All stainless steel construction
  • Low pressure drop
  • Controlled porosity within ceramic element
  • Low maintenance cost
  • Serviced without breaking pipe connections
  • Elements capable of withstanding high pressure drops
  • Elements in all of these grades can be silicone treated (defined by suffix ‘X’ after the grade number). The pore diameter, and hence the retention rating, remains unaltered by the silicone treatment, but it improves the coalescing effect (for air/gas applications only).

Multi Stage high pressure filter

The FSSTH Multi Stage high pressure filter range of units consists of a pre-filter, carbon adsorber and after-filter. The range is based on a number of standard units designed for pressures up to 700 kg/cm2 at 65°C.

Details of the pre-filter and after-filter units are given separately. These units are capable of removing oil and water droplets, and solid particles of 0.3 micron and above with 99.999% efficiency, and hydrocarbon vapours including odour to 99.999% efficiency.


The pre-filter is fitted with a silicone treated ceramic element grade P8X. This effectively removes solids and liquid impurities from the air stream and so extends the useful life of the adsorber unit.

Carbon Adsorber

The carbon adsorber unit provides a deep bed of activated carbon. This ensures an evenly distributed flow, and removes organic flavours and vapours from the air or gas stream. Activated carbon is specially selected for its highly adsorbent qualities.

Other adsorbents available

  • Molecular Sieve
  • Activated Alumina
  • Moleculite
  • After-Filter

The after-filter is fitted with a grade C0 ceramic element, efficiently removing solid particulates down to 0.3 micron thereby preventing the passage of both airborne bacteria and traces of carbon dust carried over from the adsorber section.

The air or gas exiting the three stage filter is of purity suitable for breathing air, fermentation tanks and processes requiring the highest standard.

Sump Volume

The large volume sump capacity on all filters accommodates the impurity that is separated mechanically. This reduces the contaminant load on the filter element and increases filter life.

Vessel Construction

All stainless steel consisting of a minimum number of parts for easy assembly and dismantling. They are designed for a working pressure of 700 kg/cm2 at 65°C, and vertically mounted for use with horizontal in-line pipe connections.

Servicing can be carried out from the top and bottom without breaking into the pipeline.