Type FWS..W water separators are mainly designed for separating great amounts of liquids from compressed air flows (liquid separation), i.e. separating compressed air condensate regenerated in after-coolers or refrigerant dryers. Larger solid contaminants are, of course, also separated during this process. Due to their internal separation process flow direction is from inside to outside (typical code 'S' for water separators is not applied).
Type FWS filter housings are made from high-quality welded steel parts. For surface finishing purposes and for increasing the resistance the housings are sandblasted, then completely primed (except for the sealing surfaces). Finally, an additional layer is painted on the outer side. Opening of the housings for cleaning purposes is particularly easy because the housing flange is located far down which means that only the "light" housing base has to be removed. With the 200 - 2000 models the housing base is provided with a handle and a hinge and can therefore easily be opened. An eyebolt on the filter housing provides for easy transportation and mounting. The housing base has a round design which allows for separated liquids to drain completely and which avoids risks resulting from residual amounts of liquid (risk of rust formation).
The filter housings comply with the requirements of the Pressure Equipment Directive 97/23/EC and have the CE marking of this European directive.
Welded within the filter housing there is a guidance pipe accelerating the compressed air flow, enriched with water, downwards to a separation cone which operates as a rebound plate at the same time. While the "light weighted" compressed air flow makes a total turn leaving the water separator from the bottom to the top at substantially reduced velocity the "heavy weighted" water is guided below the separation cone and thus outside the area of flow, leaving the filter housings through the condensate outlet.
On purpose there is no 'cyclone flow' characteristic in order to avoid unnecessary pressure loss. All the features mentioned above are a contribution to a water separator which has a high performance (water separation efficiency) combined with economic efficiency (low differential pressure) and maximum operating safety (integrated metal design).