Explosion Isolation Valves


Explosion Isolation Valves are designed to be installed on bag houses dirty side ductwork to prevent the damaging effect of a dust collector explosion from returning to a building.  In most cases, these valves are part of a larger solution including a Control Panel, Micro Switch and ATEX Dust Level Sensor for NFPA 69-2014 compliance.


The Explosion Isolation Valve is designed to protect your facilities and employees by preventing an explosion from within a baghouse or filtration system from moving past the valve. Without an isolation valve, if a fire or explosion takes place, burning fuel and explosive force rapidly expands and can enter the building through the duct system, causing severe injury and damage to property.


Using an explosion isolation valve, otherwise called a back blast valve or flap valve is essential for safety and security. When an explosion begins to propagate down a duct line the flap style isolation valve automatically closes from the pressure of the explosion. The flap valve remains shut and is designed to prevent any flame from further propagation. 
An Explosion Isolation Valve should be certified as an explosion isolation device according to the Directive 94/9/EC and in conformity to the EN16447:2014 standard.

 

This Flap Valve, otherwise called a back blast valve is a NFPA 69 compliant passive flap style isolation valve. When an explosion begins to propagate down a duct line the flap valve automatically closes from the pressure of the explosion. The flap valve remains shut and is designed to prevent any flame from further propagation. 

  • Available from DN160 to DN700 (see chart below).
  • For metallic and non-metallic dusts
  • Automatic locking of the valve in the closed position in the
  • event of an explosion.
  • Finished painted steel or stainless steel.
  • Pred max 0,50 bar
  • Kst max 400 bar.m/s
  • NFPA 69 compliant design
  • EN 16447 approved

 

Options

  • Micro-switch shut down system
  • Dust level sensor
  • Control panel for sensor power and integration