Formula Air BADA000018 Manuel d'entretien - Page 3
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1. PRODUCT DESCRIPTION
The non‐return valves are ATEX certificated protective systems which prevent a dust explosion
propagation through the ductwork into other areas. The non‐return valve cannot isolate a dust
explosion when it propagates through the normal air flow direction.
The non‐return valves are not designed to prevent the transmission of fire or burning powder
transported by the normal process flow.
The non‐return valves are built in 3 mm thick 16mo3 steel, powder coated RAL 5010 and the flap
of HB400 (Hardox).
Formula Air Non‐return valves fulfill all relevant requirement to be used safely in an explosion
hazardous environment. To accomplish this, several instructions are described in this manual and shall
be following prior to and during operation.
The following harmonized standards have been applied:
EN‐ISO80079‐36:2016
EN 16447:2014
Figure: 1 shows a non‐return valve.
Explosive atmospheres – Part 36: Non‐electrical equipment for
explosive atmospheres – Basic method and requirement
Explosion isolation flap valves
Figure: 1 Non‐Return Valve
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