Explosion Venting On Ducts and Pipelines – STT Type Diverter

Explosion Venting On Ducts and Pipelines – STT Type Diverter

Applications:

  • protection against propagation of explosion from processing equipment (e.g. mills) to silos, filters or electrostatic precipitators by controlled venting of explosion effects to the atmosphere (explosion isolation) and/or,
  • protection against explosion propagation from silos, filters or electrostatic precipitators to the plant’s process equipment by controlled venting of explosion effects (explosion isolation).

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Specifications/operation:

  • the diverter type flap is installed on ducts and pipelines for the protection of a process line from explosion or flame penetration and consequently from the damage caused by secondary explosions,
  • at the moment of an explosion the flap is released from snap fasteners and the flap’s lid is opened,
  • the lid’s opening pressure is set to the factory’s default values and the fasteners are sealed,
  • the diverter’s basic operating principle is similar to that of TT-Uni-K type doors (see safety doors),
  • it is possible to use a limit sensor to signal the opening of the diverter’s flap,
  • the diverter can be made in two versions:
    • the flap is closed manually after an explosion,
    • the flap is closed automatically after an explosion.