The Fike DFI compact passive explosion isolation valve has been tested and proven to perform accurately under pressures which it may experience during a deflagration from interconnected pipes and vessels.
Currently available in sizes up to DN800 (32 in.), the company says that testing methods not only meet EN16447’s requirements but exceed it by including a protected zone pipeline with additional dust injectors, holding flaps in an open position until the precise time of ignition or flow reversal, using explosion vent panels instead of open venting ports, and using fans with real process flow and turbulence levels.
Units are engineered to perform in both horizontal and vertical pipes and close to bends, as well as able to be installed closer to a vessel than other flap valves due to its fast-closing, lightweight flaps.
The valve is compact in its design with a reduced footprint due to two smaller flaps instead of one large flap. Explosion pressures up to 1.5 barg can be tolerated, in applications with ST1 dusts (sugar, powdered milk, charcoal, sulfur, zinc), ST2 dusts (wood, flour), light metal dusts (aluminum), and low MIE (minimum ignition energy) dusts.
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