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LH/AD-T

Deflagration Flame Arrester, short time burning-proof, End-of-Line

  • weather hood with protection screen protects the PROTEGO® flame arrester unit against environmental impact, such as nesting animals and weather conditions
  • available for DN 50/2“- bis DN 800/32“- pipes
  • trouble-free maintenance
  • advanced design for higher operating temperatures
  • provides protection against atmospheric deflagrations and short-time burning
  • low operating and lifecycle costs
  • cost-effective flame arrester
  • cost-effective spare parts

Función y Descripción

The PROTEGO® LH/AD-T end-of-line deflagration flame arrester provides protection against flame transmission through atmospheric deflagration and short time burning on the flame arrester element. The device is typically installed on vent lines of vessels and plant equipment which are not pressurized. The device is equipped with a temperature sensor which immediately detects a flame on the FLAMEFILTER® surface. After the flame is detected, a secondary measure, such as inerting or closing of a shut-off valve to block the vapor flow to the device, should activate within 60 seconds and extinguish the flame so that the system can operate safely. The device prevents flame transmission from short time burning and atmospheric deflagration into the vessel or plant.

The PROTEGO® LH/AD-T consists of the housing (1), a weather hood (2), and the PROTEGO® flame arrester unit (3). The device is equipped with a metal weather hood. The FLAMEFILTER® (4) gap size depends on the device’s intended use. Specifying the operating conditions, such as the temperature, explosion group, and the composition of the fluid, enables PROTEGO® to select the best end-of-line deflagration flame arrester for your application. The PROTEGO® LH/AD-T series end-of-line deflagration flame arrester is available for substances from explosion groups IIA to IIC (NEC groups D to B).

The standard design can be used with an operating temperature of up to +60°C / 140°F. Devices with special approval for higher temperatures are available upon request.

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

Dimensiones

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

DN abc*c*
IIB3IIC
50 / 2"100 / 3.94240 / 9.45530 / 20.87550 / 21.65
80 / 3"150 / 5.91295 / 11.61560 / 22.05580 / 22.83
100 / 4"200 / 7.87350 / 13.78585 / 23.03605 / 23.82
150 / 6"300 / 11.81600 / 23.62630 / 24.80655 / 25.79
200 / 8"300 / 11.81600 / 23.62630 / 24.80655 / 25.79
250 / 10"400 / 15.75800 / 31.50750 / 29.53770 / 30.31
300 / 12"400 / 15.75800 / 31.50740 / 29.13760 / 29.92
350 / 14"600 / 23.621000 / 39.37800 / 31.50820 / 32.28
400 / 16"600 / 23.621000 / 39.37790 / 31.10815 / 32.09
500 / 20"700 / 27.561200 / 47.24810 / 31.89835 / 32.87
600 / 24"800 / 31.501200 / 47.24935 / 36.81960 / 37.80
700 / 28"1000 / 39.371500 / 59.06975 / 38.39995 / 39.17
800 / 32"1200 / 47.241700 / 66.931015 / 39.961035 / 40.75
Dimensiones en mm / pulgadas * c are reference values. Exact measures depend on the flange connection.

Selección de materiales para la vivienda

DesignAB
HousingSteelStainless Steel
Weather Hood

Stainless Steel

Stainless Steel
Protection screenStainless SteelStainless Steel
Flame arrester unitA, BB
Special materials upon request

Combinación de materiales para la unidad apagallamas

DesignAB
FLAMEFILTER® cageSteelStainless Steel
FLAMEFILTER®Stainless SteelStainless Steel
Special materials upon request

Selección del grupo de explosión

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
≥ 0,65 mmIIB3C
< 0,5 mmIICB
Special approvals upon request

Especificación de la máx. temperatura de operación

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

Tipo de bridas de conexión

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.
other types upon request

Modelo y especificación

Following designs are available:

Deflagration flame arrester, end-of-line, basic design

LH/AD-T

Special designs available on request

Diagrama de flujo volumétrico

Los diagramas de flujo volumétrico han sido determinados con un banco de pruebas de caudal calibrado y certifi - cado por TÜV. El flujo volumétrico V. en [m³/h] y el CFH se refi eren a las condiciones estándar de referencia de aire según ISO 6358 (20°C, 1bar). La conversión a otras densidades y temperaturas están referidas en el Vol. 1: “Fundamentos Técnicos”.