Explosion Isolation Valves

The installation of an explosion isolation device on all suction side ducts that transport material with a Kst value above zero is an NFPA requirement. Installing a Explosion Isolation Valve will protect workers and facilities from the damaging effect of a baghouse or filter explosion.

The installation of an explosion isolation device on all suction side ducts that transport material with a Kst value above zero is an NFPA requirement. Installing a Explosion Isolation Valve will protect workers and facilities from the damaging effect of a baghouse or filter explosion.

Vigiflap explosion isolation valve
No Return Valve (NRV) explosion isolation valve

Vigiflap

The Vigiflap can be used for KSTs under 250 and can be installed at any angle. The flap can be held open with the process airflow or a locking mechanism.

 

Optional Features

  • Galvanized or Stainless Steel Body
  • Dust level sensor to prevent dust accumulation
  • Connection box installed on the body

No Return Valve

The No Return Valve is your best solution for high KST dusts. NRV Combo is rated for 325 KST and NRV Metal is rated for 400 KST.

 

Optional Features

  • Mounted microswitch for automatic shutdown
  • Dust level sensor with adjustable sensitivity
  • Intrinsically safe control panel
Chart comparison of Vigiflap vs. NRV explosion isolation valves
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