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LDA-W

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

  • easily accessible due to external installation
  • low risk of contamination
  • low pressure loss
  • provides protection against deflagrations and stable detonations
  • useable for nearly all flammable liquids
  • meets TRbF* requirements
  • can also be used as a dirt catcher in a maintenance friendly design
* TRbF = technical regulations for flammable liquids

Функция и описание

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 the container in the filling line. If the explosive atmosphere is ignited, the device prevents the combustion from transferring into the tank. The PROTEGO® LDA-W series of liquid detonation flame arresters function 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 are substantially reduced by the design 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 vapor / air mixture temperature of up to +60°C / 140°F and an absolute pressure of up to 1.1 bar / 15.9 psi. This covers all possible operating conditions of empty lines for flammable liquids. The liquid detonation arrester is designed for pressures of up to 10 bar / 145 psi, resists explosion pressure, and provides 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 are available.

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

Таблица параметров

To select the nominal size (DN), please use the flow capacity chart on the following pages

DN25 / 1"32 / 1¼“40 / 1½“50 / 2"65 / 2½“80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
a250 / 9.84275 / 10.83350 / 13.78350 / 13.78450 / 17.72450 / 17.72500 / 19.69600 / 23.62600 / 23.62700 / 27.56850 / 33.461000 / 39.37
b325 / 12.80360 / 14.17420 / 16.54420 / 16.54540 / 21.26540 / 21.26595 / 23.43915 / 36.02915 / 36.021100 / 43.311325 / 52.171480 / 58.27
c445 / 17.52480 / 18.90565 / 22.24565 / 22.24720 / 28.35720 / 28.35800 / 31.501265 / 49.801265 / 49.801520 / 59.841830 / 72.052050 / 80.71
d140 / 5.51140 / 5.51195 / 7.68195 / 7.68275 / 10.83275 / 10.83325 / 12.80460 / 18.11460 / 18.11510 / 20.08610 / 24.02700 / 27.56
размер в мм

Выбор материала корпуса

DesignABC
HousingSteelStainless SteelHastelloy
GasketPTFEPTFEPTFE
Special materials upon request

Выбор группы взрывоопасности

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
Special approvals upon request

Спецификация макс. рабочей температуры

≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation
higher operating temperatures upon request

Вид фланцевого соединения

 EN 1092-1, Форма B1
ASME B16.5 CL 150 R.F.
other connections upon request

Диаграммы пропускной способности

The volume flow V in m³/h was determined with water according to DIN EN 60534 at a temperature Tn = 15°C and an atmospheric pressure pn = 1,013 bar, kinematic viscosity v = 10-6 m²/s