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Explosion Isolation Flap

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Download CARZ Explosion Isolation Flap PDF

The Standards
Various NFPA standards require that a dust collection system has a means of preventing the transmission of energy from a fire or explosion to the building/work area. Through extensive testing by a third party testing facility, Nordfab has developed the Explosion Isolation Flap (EIF) type CARZ to be installed upstream of the dust collector.

How It Works
Under normal operation the flap will open as the downstream air moving device generates a flow in the ductwork. Should an explosion happen in the downstream equipment - like a dust collector - a pressure front develops in the ductwork within milliseconds and due to the design of the EIF, the internal flap will be forced closed and seal off the approaching flame front. This prevents glowing embers and burning material from entering into upstream equipment and spaces.

Without Explosion Isolation Flap With Explosion Isolation Flap


Normal OperationExplosion/Deflagration

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Sku Description Price Quantity
CARZ-05-FL CARZ 5" EXPLOSION ISOLATION FLAP - FLANGED ENDS $2165.00
CARZ-05-QF CARZ 5" EXPLOSION ISOLATION FLAP - QF ENDS $2150.00
CARZ-06-FL CARZ 6" EXPLOSION ISOLATION FLAP - FLANGED ENDS $2215.00
CARZ-06-QF CARZ 6" EXPLOSION ISOLATION FLAP - QF ENDS $2195.00
CARZ-07-FL CARZ 7" EXPLOSION ISOLATION FLAP - FLANGED ENDS $2315.00
CARZ-07-QF CARZ 7" EXPLOSION ISOLATION FLAP - QF ENDS $2295.00
CARZ-08-FL CARZ 8" EXPLOSION ISOLATION FLAP - FLANGED ENDS $2475.00
CARZ-08-QF CARZ 8" EXPLOSION ISOLATION FLAP - QF ENDS $2450.00
CARZ-10-FL CARZ 10" EXPLOSION ISOLATION FLAP - FLANGED ENDS $2560.00
CARZ-10-QF CARZ 10" EXPLOSION ISOLATION FLAP - QF ENDS $2525.00
CARZ-1000-FL CARZ 1000MM EXPLOSION ISOLATION FLAP - FLANGED ENDS $6895.00
CARZ-12-FL CARZ 12" EXPLOSION ISOLATION FLAP - FLANGED ENDS $2895.00
CARZ-12-QF CARZ 12" EXPLOSION ISOLATION FLAP - QF ENDS $2845.00
CARZ-14-FL CARZ 14" EXPLOSION ISOLATION FLAP - FLANGED ENDS $3360.00
CARZ-14-QF CARZ 14" EXPLOSION ISOLATION FLAP - QF ENDS $2995.00
CARZ-16-FL CARZ 16" EXPLOSION ISOLATION FLAP - FLANGED ENDS $3695.00
CARZ-16-QF CARZ 16" EXPLOSION ISOLATION FLAP - QF ENDS $3620.00
CARZ-18-FL CARZ 18" EXPLOSION ISOLATION FLAP - FLANGED ENDS $3850.00
CARZ-18-QF CARZ 18" EXPLOSION ISOLATION FLAP - QF ENDS $3795.00
CARZ-20-FL CARZ 20" EXPLOSION ISOLATION FLAP - FLANGED ENDS $4265.00
CARZ-20-QF CARZ 20" EXPLOSION ISOLATION FLAP - QF ENDS $4035.00
CARZ-22-FL CARZ 22" EXPLOSION ISOLATION FLAP - FLANGED ENDS $4525.00
CARZ-22-QF CARZ 22" EXPLOSION ISOLATION FLAP - QF ENDS $4274.00
CARZ-630-FL CARZ 633MM EXPLOSION ISOLATION FLAP - FLANGED ENDS $4775.00
CARZ-710-FL CARZ 710MM EXPLOSION ISOLATION FLAP - FLANGED ENDS $4950.00
CARZ-800-FL CARZ 800MM EXPLOSION ISOLATION FLAP - FLANGED ENDS $6375.00
CARZ-900-FL CARZ 900MM EXPLOSION ISOLATION FLAP - FLANGED ENDS $6625.00
Note Icon Custom Notes:


ORDERING NOTES: Unless specified, 3" through 24" is QF. Over 24" is flanged. Data subject to change without notice. Stainless steel components requiring flanges will be supplied with stainless steel flanges unless otherwise specified. For special parts or items to be custom manufactured, contact us for quotation.