In-Line Liquid Detonation Flame Arrester
for filling lines - external installation

Función y Descripción

The PROTEGO® LDA-W liquid detonation flame arrester was developed for storage container filling lines that are not continuously filled with product and sometimes contain a combustible mixture. The device is installed outside of the container in the filling line. If the explosive atmosphere is ignited, the device prevents the combustion from traveling into the tank. The PROTEGO® LDA-W series of liquid detonation flame arresters functions according to the siphon principle in which the liquid product serves as a barrier against flame propagation.

When a highly accelerated pipe deflagration or detonation occurs, the combustion pressure and flame propagation speed is first substantially reduced by the construction and converted into a low-energy deflagration that is then stopped by the remaining immersion liquid.

The application range for the device is a product vapour/ air mixture temperature up to +60°C / 140°F and an absolute pressure up to 1.1 bar / 15.9 psi. This covers all of the possible operating conditions of empty lines for flammable liquids. The liquid detonation arrester is designed for pressures up to 10 bar / 145 psi and therefore resists explosion pressure offering protection for almost all flammable liquids. The device is approved for explosion groups IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm). Special designs with a cleaning cover for highly viscous and contaminated liquids can be provided.

Type-approved in accordance with the current ATEX Directive and EN ISO 16852 as well as other international standards.

Características especiales y ventajas

  • the device is easily accessible since it is mounted on the containers outside
  • minimum risk of soiling
  • low pressure loss
  • provides protection from deflagrations and stable detonations
  • useful for nearly all flammable liquids
  • meets TRbF* requirements
  • maintenance friendly design also useable as strainer
*TRbF = technical regulations for flammable liquids

Diagrama de flujo volumétrico

El fl ujo volumétrico V en m³/h se determinó con agua según DIN EN60534 a una temperatura Tn = 15°C y a una presión atmosférica pn = 1,013 bar, viscosidad cinemática v = 10-6 m²/s.