Explosion Isolation

Preventing Secondary Deflagrations

Explore how Fike’s fast-acting explosion isolation valves and suppression systems prevent flame propagation from reaching interconnected processes and ducts, protecting downstream equipment and, most importantly, its operators.

The Dangers of Secondary Explosions

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History has shown that the most devastating dust explosions often occur after the initial deflagration propagates into downstream equipment, causing widespread damage and casualties. Learn how if not properly isolated, secondary explosions may propagate…

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from primary deflagrations, even if properly vented.

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downstream, even if dust is minimal.

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against flow.

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and strengthen through interconnected ducting.

PRODUCTS

To prevent secondary explosions, Fike offers reliable, fast-acting products for applications requiring passive or active explosion-isolating solutions.

Active Explosion Isolation Solutions

Active explosion isolation valves are controlled by an explosion detector, which continually monitors conditions and triggers these valves in the event of a deflagration. Fike’s active explosion isolation products include:

  • Chemical Explosion Isolation (SRD)

    Chemical Explosion Isolation is achieved through a rapid discharge of a chemical explosion suppressant to prevent the flame from continuing through to other ar…

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  • Explosion Isolation Valve (EIV/FAV)

    Designed to close within milliseconds of detecting an explosion. Because it’s one of the fastest active forms of explosion protection available, an EIV can be …

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  • Explosion Isolation Pinch Valve (EIPV)

    Quickly releases compressed air into an elastomeric sleeve that is “pinched” to full closure, preventing propagation beyond the valve.

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  • I-Flex™ Explosion Isolation Valve

    Quickly releases compressed air into an elastomeric sleeve that is “pinched” to full closure, preventing propagation beyond the valve.

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  • Explosion Protection Active Controller System shown with relay module

    Explosion Detection and Controls

    Fike has the most advanced control systems available in today's explosion protection market. Fike's Detection and Control Systems are pre-configured to recogni…

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Passive Explosion Isolation Solutions

Passive explosion isolation valves are triggered by the airflow from a deflagration. Fike’s passive explosion isolation products include:

  • DFI - Dual-Flap Isolation Valve - Explosion Isolation Valve

    DFI – Dual-Flap Isolation Valve

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  • Flow Actuated Explosion Isolation Valve (Ventex®)

    Equipped with a sphere that “floats” during normal air flow and “plugs” the valve during a deflagration-generated pressure wave.

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652 and You: Challenges & Solutions for New Combustible Dust Standard

NFPA 652 provides the general requirements for management of combustible-dust fire and explosion hazards and directs users to NFPA’s industry- or commodity-specific standards as appropriate. Fike’s explosion protection expert, Bruce McLelland, identifies solutions to six challenges faced by powder-bulk-solids facilities in implementing NFPA 652.

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