LDA-W
In-Line Liquid Detonation Flame Arrester for filling lines - external installation
Caractéristiques
Fonction et description
Prevention of Flame Spread in Tank During Ignition
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 Appareil A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow. is installed outside the container in the filling line. If the explosive atmosphere Atmosphère à risques d'explosion A mixture of air and flammable substance in the form of gases, vapors, mists or dusts under atmospheric conditions in which, after ignition, spreads to the entire unburned mixture. 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.
Reduction of Flame Propagation Speed
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.
For Explosion Groups IIA to IIB3
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 Arrête-flammes antidétonation Flame arrester designed to prevent the transmission of a detonation. 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).
Many Individual Certifications
Special designs with a cleaning cover for highly viscous and contaminated liquids are available. EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Dimensions
To select the nominal size Diamètre nominal The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (DN), please use the flow capacity chart on the following pages
| DN | 25 / 1" | 32 / 1¼“ | 40 / 1½“ | 50 / 2" | 65 / 2½“ | 80 / 3" | 100 / 4" | 125 / 5" | 150 / 6" | 200 / 8" | 250 / 10" | 300 / 12" |
| a | 250 / 9.84 | 275 / 10.83 | 350 / 13.78 | 350 / 13.78 | 450 / 17.72 | 450 / 17.72 | 500 / 19.69 | 600 / 23.62 | 600 / 23.62 | 700 / 27.56 | 850 / 33.46 | 1000 / 39.37 |
| b | 325 / 12.80 | 360 / 14.17 | 420 / 16.54 | 420 / 16.54 | 540 / 21.26 | 540 / 21.26 | 595 / 23.43 | 915 / 36.02 | 915 / 36.02 | 1100 / 43.31 | 1325 / 52.17 | 1480 / 58.27 |
| c | 445 / 17.52 | 480 / 18.90 | 565 / 22.24 | 565 / 22.24 | 720 / 28.35 | 720 / 28.35 | 800 / 31.50 | 1265 / 49.80 | 1265 / 49.80 | 1520 / 59.84 | 1830 / 72.05 | 2050 / 80.71 |
| d | 140 / 5.51 | 140 / 5.51 | 195 / 7.68 | 195 / 7.68 | 275 / 10.83 | 275 / 10.83 | 325 / 12.80 | 460 / 18.11 | 460 / 18.11 | 510 / 20.08 | 610 / 24.02 | 700 / 27.56 |
Dimensions in mm / inches
Material selection for housing
| Design | A | B | C |
| Housing | Steel | Stainless Steel | Hastelloy |
| Gasket | PTFE | PTFE | PTFE |
Special materials upon request
Selection of explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0,90 mm | IIA | D |
| ≥ 0,65 mm | IIB3 | C |
Special approvals upon request
Specification of max. operating temperature
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature Operating temperature Temperature reached when the equipment is operating under design conditions. in °C |
| - | Designation |
higher operating temperatures upon request
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other connections upon request
Flow Capacity Chart
The volume flow V in m³/h was determined with water according to DIN EN 60534 at a temperature Tn = 20°C and an atmospheric pressure pn = 1,013 bar, kinematic viscosity v = 10-6 m²/s
