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Technical lea昀氀et
QTL068(A)
Date
2023-03-29
Explosion Isolation Flap Valve CARZ-N - protective system
Explosion Isolation Flap Valve type CARZ-N is designed
as an explosion pressure resistance equipment, which is
able to prevent the transmission of dangerous e昀昀ects from
an explosion pressure wave and 昀氀ame front to upstream
areas. Certi昀椀ed according to EN 16447.
Description
Welded construction in RAL 5009 blue painted steel plate.
Function
During air昀氀ow generated by main fan, the Flap plate is open.
In case of an explosion in the downstream equipment (e.g.
dust collector) a pressure wave will force the Flap plate to
close and lock in position. Large opening angle ensures low
pressure drop. When Flap plate is closed it makes an e昀昀ective barrier against approaching 昀氀ame front. This prevents
the explosion from being transmitted to upstream work areas,
protecting workers, machinery and the facility.
Suction direction
Explosion direction
PATENTED PRODUCT
Marking, external zone 21
Patent protected product:
•
•
•
EP patent: EP 3 343 077
1026
USA: US 10 315 059
II D St1
II D St2
II 1/2 D Ex h IIIC T75°C Da/Db
China: 201711349554.2
Ex h IIIC T75°C Da/Db
The marking is based on product certi昀椀cation:
•
FTZU 16 ATEX 0192X by N.B. No. 1026 and Quality
System approval by N.B.
•
IECEx FTZU 17.0015X - Product certi昀椀cation according
to International Certi昀椀cation System IECEx.
