Q-Flap Non-Return Explosion Valve (self-monitoring capability available as an option)

Specifications:

A: operating principle:

• • during normal operation the flap is maintained in an open position by the flow of air,
  • when idle, the flap closes under its own weight,
  • at the moment of activation, until the required speed of gas flow is reached, the flap is protected by a special dampening element,
  • in the event of an explosion the flap is spontaneously closed by the face of the pressure wave (stoppage of pressure and flame),
  • the vibration dampener protects the flap against undesirable opening caused by the vacuum created in the system after an explosion.

B: self-monitoring function:

• • • wear and tear sensor can be fitted as an option to monitor the abrasion that develops on the flap itself. This sensor will prolong the flap’s operating life. As standard Q-Flap is equipped with an integrated clogging sensor that indicates any kind of product accumulation underneath the seats and ensures safe closing of the flap.

C: benefits:

• • • Q-Flap is certified to meet EN 15089 (from 04.2007),
    • sutable for organic and inorganic dusts,
    • passive explosion isolation system,
    • two sensors monitoring flap operation (option, can be added at a later time),
    • easy opening of the flap’s housing using a clip-on cover (for inspections or maintenance).

D: application restrictions:

• • air flow velocity within 15-30 m/s,
  • dust Kstmax value up to 300 bar m/s (ST1 and ST2 class),
  • reduced Pred explosion pressure below 0.4 bar,
  • horizontal mounting, one-way operation.