ALFA IN FO and FT filters are designed for removing impurities from fluid medium in pipelines. In compliance with standard EN 437:2004, they are suitable for distribution of heating gases, air and other non-aggressive gases, where lower content of impurities is required. That is why they are inserted before gas-meters, valve batteries, burners, etc. The filters can be used according to a model up to maximum working pressure of 0.4; 0.6; 1.6 MPa and working temperature from -20 °C to +80 °C. Maximum speed of medium at the inlet nozzle is 20 m/s-1. The filters consist of a body, a cover and a resilient filtration cartridge. The body and the cover is die-cast and machined from AlSi10Mg. ALFA IN Gas Filters are as standard equipped with Filter Inlet s 5 µm which is able to capture the impurities bigger than 5 µm (0,005 mm). The filter can be also equipped with Filter Inlet 20 µm which is able to capture impurities bigger than 20 µm on request. Filter Inlet 20 µm has a lower pressure loss that the standard Filter Inlet 5 µm. For filters size DN 100, DN 150 and DN 200 is a Filter Inlet 100 µm made of stainless steel as a third option. Stainless steel inlets is suitable for biogas or gas with a higher moisture content.
