Explosion Venting On Ducts and Pipelines – STT Type Diverter

Manufacturer: Thorwesten Vent GmbH

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)

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