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Flameless Explosion Venting Device
–
FLEX
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35
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3. PRODUCT DESCRIPTION
If the explosive atmosphere in the form of a whirled dust cloud occurs in the technology and
if the atmosphere comes into contact with a source of ignition, there may be immediate
explosion. FLEX protects the technology, operators and the environment from the destructive
effects of such explosions.
The FLEX devices of the F and R series feature the base, therefore the rectangular
membrane. The FLEX devices of the C series feature the base, therefore the round
membrane.
3.1 OPERATING PRINCIPLE
The flameless explosion venting device - FLEX
consists of the equipment for explosion
venting (membrane) and the device for the absorption of the released energy (FLEX), which
spreads during the dust explosion in a confined space. FLEX prevents the transmission of
the explosion pressure and flame through the release opening of the membrane, thereby
protecting people and equipment in its vicinity. FLEX must be used in the event of the
membrane installation inside the building, where the protected equipment is located. In the
event of explosion, FLEX captures the explosion energy (flame, pressure) coming from the
open membrane. Any damage to the product may result in the product failure. This could
cause the transmission of the dust explosion from the protected vessel to the operators'
zone. For this reason, it is very important to read through these instructions prior to the
commencement of the installation.
The distances of the installed FLEX devices to the adjacent machinery or walls must be
approved by the manufacturer. This distance is required for the proper function of FLEX. The
minimum distance between FLEX and the nearest machinery (or the building wall) must be at
least 500 mm (see chapter 3.4).