LDA
Liquid Detonation Flame Arrester for filling lines - internal installation
Features
Bajo riesgo
Low Risk of Fouling
Cumple los requisitos de la Norma TRGS
TRGS = Reglamento Técnico para Sustancias Peligrosas
Diferentes conexiones
Available With Different Connections
Seguridad frente a explosiones
Proporciona protección contra deflagraciones y detonaciones estables
Para líquidos inflamables
apto para casi todo tipo de líquidos inflamables
Baja pérdida de carga
Function and Description
Prevention of Flame Spread in Tank During Ignition
The
Pressure/vacuum relief valve
Pressure/vacuum relief valve is an umbrella term that includes pressure or vacuum relief valve as well as pressure and vacuum relief valve.
PROTEGO® LDA Series of Liquid
Detonation
Detonation
Explosion propagating at supersonic velocity and characterized by a shock wave (EN 1127-1: 1997).
Arresters was developed for storage tank filling lines that are not continuously filled with
product
Product
Includes equipment, protective systems, devices, components and combinations of these.
and sometimes contain a combustible mixture.
The
device
Device
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 inside the tank at the end of the line and prevents the combustion from being transferred into the tank if the
explosive atmosphere
Explosive atmosphere
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.
ignites. The liquid
detonation arresters
Detonation flame arrester
Flame arrester designed to prevent the transmission of a detonation.
function according to the siphon principle in which the liquid product serves as a liquid barrier to flame propagation.
Reduction of Flame Propagation Speed
When a highly accelerated pipe
deflagration
Deflagration
Explosion propagating at subsonic velocity (EN 1127-1:1997).
or detonation occurs, the combustion pressure and flame propagation speed is substantially reduced by the design, converted into a low-energy deflagration, and 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 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 pressure-resistant up to 10 bar / 145 psi. The device protects against nearly all flammable liquids and is approved for
explosion
Explosion
Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously.
groups IIA to IIB3 (NEC group D to C MESG ≥ 0.65 mm).
EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product Data
Dimensiones
To select the nominal size Nominal size 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" |
| a | 500 / 19.69 | 580 / 22.83 | 700 / 27.56 | 700 / 27.56 | 825 / 32.48 | 925 / 36.42 | 1050 / 41.34 | 1150 / 45.28 | 1350 / 53.15 | 1650 / 64.96 | 2000 / 78.74 |
| b | 538 / 21.18 | 620 / 24.41 | 745 / 29.33 | 745 / 29.33 | 870 / 34.25 | 975 / 38.39 | 1102 / 43.39 | 1205 / 47.44 | 1405 / 55.31 | 1712 / 67.40 | 2068 / 81.42 |
| c | 725 / 28.54 | 805 / 31.69 | 925 / 36.42 | 925 / 36.42 | 1050 / 41.34 | 1145 / 45.08 | 1270 / 50.00 | 1380 / 54.33 | 1580 / 62.20 | 1880 / 74.02 | 2300 / 90.55 |
| d | 115 / 4.53 | 140 / 5.51 | 168 / 6.61 | 168 / 6.61 | 220 / 8.66 | 245 / 9.65 | 325 / 12.80 | 356 / 14.02 | 500 / 19.69 | 600 / 23.62 | 700 / 27.56 |
| e | 50 / 1.97 | 58 / 2.28 | 65 / 2.56 | 65 / 2.56 | 95 / 3.74 | 105 / 4.13 | 135 / 5.31 | 155 / 6.10 | 200 / 7.87 | 250 / 9.84 | 300 / 11.81 |
Dimensiones en mm / pulgadas
Selección del grupo de explosión
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0,90 mm | IIA | D |
| ≥ 0,65 mm | IIB3 | C |
Special approvals upon request
Especificación de la máx. temperatura de operación
| ≤ 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
Selección de materiales para la vivienda
| Design | A | B |
| Housing Housing A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. | Steel | Stainless Steel |
| Gasket | PTFE | PTFE |
Special materials upon request
Tipo de bridas de conexión
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other types upon request
Outlet type
| Straight pipe | I |
| Beveled pipe | II |
| EN 1092-1, Form B1 or DIN 2501, Form C | III (EN or DIN) |
| ASME B16.5 CL 150 R.F. | III (ASME) |
other types upon request
Diagrama de flujo volumétrico
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
To avoid electrostatic charge of flammable liquids the maximum flow is limited (refer to TRGS 727, CENELEC-Report CLC/TR 60079-32-1).
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