Type EFSTP filter elements of filtration grades D are sintered metal steam filter elements suitable for FST filter housings of type FWP. They are mainly designed for separating solid contaminants from (water) steam flows (steam filtration), i.e. rust, abrasion, etc. and are available with micron ratings of 25µ and 1µ (culinary steam quality). Filtration grade D filter elements, of course, also separate solid contaminants from high temperature compressed air flows and are therefore used for particle filtration from compressed air flows at high temperatures. 

Type EFSTP filter elements of filtration grades D consist of a dimensionally stable, micro porous stainless steel sintered body with a void volume of up to 40% with micron ratings of 25µ and 1µ and stainless steel end caps. 

EFSTP..D.. steam filter elements are manufactured using stainless steel hardware and are assembled using the latest welding technology. The welding process ensures a reliable, durable and thermal resistant joint of all components and is fundamental to the operational safety of a steam filter element. There are no resin bonded joints that may soften at high temperatures or break during heating-up or cooling-down due to different thermal expansions of different materials, both making the integrity of the steam filter element a risk. Despite of the welded design, the same stainless steel materials are used for the sintered metal body and end caps in order to avoid different thermal expansions and thus to further ensure integrity of the steam filter element. Due to the use of stainless steel for all hardware components neither rust nor corrosion may affect the differential pressure of the steam filter element in a negative way.

All the features mentioned above are a contribution to a steam filter element which has a high performance (high separa-tion efficiency) combined with economic efficiency (low differential pressure) and maximum operating safety (welded stainless steel design).