The innovated explosion isolation flap valve B-FLAP I is certified according to EN 16447 and EN 15089. B-FLAP I was tested by an accredited laboratory with emphasis on real-world conditions in the various production processes.
With the innovation, we bring extended installation options for the explosion isolation flap valve. According to current standards and certifications, the explosion isolation flap valve can be installed in horizontal and vertical pipeline. It can be used in aspiration systems with pull or push flow. B-FLAP I can also be installed on pipelines containing obstacles or elbows between the protected equipment and the place of installation of the explosion isolation valve. A novelty is also higher pressure resistance (pmax) of the isolation flap valve and increased maximum reduced pressure (pred,max) of the protected vessel, from which a potential explosion spreads. According to the latest tests and certifications, the minimum installation distance has been shortened, and the maximum installation distance from the protected equipment has been extended.
The B-Flap I explosion isolation flap valve can stop the propagation of an explosion caused by processed organic, melting, coarse, and metal dusts up to explosion class St 3 and dusts with very low values of minimum initiation energy (MIE) and temperature (MIT). This new design of the B-FLAP I explosion isolation flap valve makes it easier to handle during the installation and operational maintenance.
The explosion isolation flap valve offers the customer effective prevention of explosion transmission between connected technologies. The explosion isolation flap valve isolates the explosion in the entire pipeline of the suction systems. Thus it is suitable not only to prevent the transmission of explosions at the inlet to the filter or cyclone but also to isolate the explosion on the outlet piping from filtration systems (so-called clean side of the filter). Other installation options of B-FLAP I are, for example, on the suction line to the mill, on the inlet, where material flows to dryers, and other similar equipment.
Explosion isolation flap valve B-FLAP I is a mechanical device designed to prevent the transfer of flame and pressure between technologies during an explosion. During normal operation, the explosion isolation flap valve is kept open using the RPD mechanism. This solution significantly reduces pressure losses in the piping system. During the explosion, the protected pipe will be closed and locked. Together with other safety elements, our flap valve forms an effective system for the protection of technological units. Most often, B-FLAP I is used in combination with an explosion venting device - VMP or FLEX. The explosion isolation flap valve is suitable for pipes with a diameter from DN 100 to DN 800.
If you use pneumatic conveying, vertical piping with a diameter of less than DN 100 in your technology, or you have technology designed for maximum explosion pressure or shorter installation distances, see GatEx or HRD barrier.
In piping systems, during material conveying between individual parts of the production technology, initiation source (e.g. hot surface, friction, a spark from equipment failure, etc.) can be easily formed, which in combination with the flowing air and the transported material creates an explosive mixture. The pressure wave and the flame bursting through the piping system can explode and thus destroy the connected technologies or endanger personnel within a close range.
Malthouses are an integral part of the food industry. This following case study will show you all risk areas, including the selection of the most suitable explosion protection designed by RSBP.
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