VigiFlap Explosion Isolation Valve Boss

Dust Collection Explosion Isolation Valve (NFPA) Compliant by Boss Products.The VigiFlap is a Dust Collection explosion isolation valve designed to prevent propagation of overpressure or a flame front caused by an explosion downstream in vessels such as dust collectors, cyclones, and filters.The valve is held open either by air flow or a proprietary locking mechanism. As a result the VigiFlap valve can be used as an explosion isolation device for both the inlet and the outlet of a vessel and at different angles.  Special consideration is required.The Explosion Isolation Valve EV-VF VigiFlap complies with NFPA guidelines and is an ATEX Certified device for the containment of explosion in dust collection systems.
Add an additional EcoMAXX® High Speed Abort Gate for an essential SAFETY SMART component in any dust collection combustible dust mitigation solution.
EcoMAXX® High Speed Abort Gates are engineered with TRIPLE SECURITY.
*Must also Purchase a DUST LEVEL SENSOR (CAPACITIVE) to use with Vigiflap.*Must also Purchase a NRV CONTROL PANEL WITH STATUS LIGHTS

Price From: $2,357.00



  • Body: Painted steel
  • Optional: 100% Stainless steel AISI 304
  • Diameters: Ø6″ to Ø52″ / Ø160mm to Ø1320mm
  • Gasket: EPDM (Silicone FDA 392°F/200°C option)
  • Pressure drop: Lower pressure drop with round domed flap
  • Can be installed at almost any angle.


The EV-VF is 100% NFPA 69 compliant with the following optional features:

  • Body: Galvanized steel
  • Optional Body: Stainless steel
  • Frame silicone FDA: 392ºF/200 ºC
  • Accumulated dust level: Dust level sensor to prevent dust accumulation
  • Connection box installed on the body, according to the ATEX zone (opposite side of the locking mechanism)


  • EN 16447
  • NFPA 69

Additional Info

Choose your Diameter

6, 7, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36


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Manual VigiFlap

BOSS Catalogue EV-VF VigiFlap

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