LH/AD
Calota de respiro à prova de deflagração
Features
Comprehensive Weather Protection
weather hood
Weather hood
A weather hood is a cover to protect the internal components of a device from environmental influences.
with protection screen protects the
PROTEGO® flame arrester unit
PROTEGO® flame arrester unit
The PROTEGO® flame arrester unit is the main component of a flame arrester. It prevents flame propagation.
against environmental impact, such as nesting animals and weather conditions
Various Sizes
available for DN 50/2“- bis DN 800/32“- pipes
Extended Application Range
for elevated operating temperatures and pressures
Spare Parts
cost-effective flame arrester / spare parts
Low Costs
low operating and lifecycle costs
Saftey
provides protection against atmospheric deflagrations, short-time burning
Easy Maintenance
without disassembling of the FLAMEFILTER®
Function and Description
Protection Against Atmospheric Deflagrations
The PROTEGO® LH/AD end-of-line
deflagration
Deflagration
Explosion propagating at subsonic velocity (EN 1127-1:1997).
flame arrester provides protection against flame transmission through atmospheric deflagration. 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 typically installed on vent lines of vessels and plant
equipment
Equipment
Machines, appliances, fixed or mobile devices, control parts and accessories, and warning and prevention systems, whether separate or combined, intended for the generation, transfer, storage, measurement, control, and conversion of energy, and for the processing of materials, which have their own potential source of ignition and may cause an explosion.
which are not pressurized. For safe application, it is important that an
endurance burning
Endurance burning
Stabilized burning for an unlimited time.
situation can be excluded. So typically, it is installed on vent lines which discharge vapor for a short time period. The device prevents flame transmission from atmospheric deflagration into the
vessel
Vessel
Container or structural envelope in which materials are processed, treated or stored.
or plant.
Main Component - PROTEGO® Flame Arrester
The PROTEGO® LH/AD consists of the
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.
(1), a weather hood (2), and the PROTEGO® flame arrester unit (3). The device is equipped with a metal weather hood. A protection screen is installed between the weather hood and the housing to keep out animals and foreign bodies. The FLAMEFILTER® (4) gap size depends on the device’s intended use. Specifying the operating conditions, such as the temperature,
explosion
Explosion
Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously.
group and the composition of the fluid, enables PROTEGO® to select the best end-of-line deflagration flame arrester for your application.
For Explosion groups IIA and IIC
The PROTEGO® LH/AD series end-of-line deflagration flame arrester is available for substances from explosion groups IIA to IIC (NEC groups D to B). Special certifications for carbon disulfide are available.
The standard design can be used with an
operating temperature
Operating temperature
Temperature reached when the equipment is operating under design conditions.
of up to +60°C / 140°F. Devices with special approval for higher temperatures are available upon request.
EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product
Product
Includes equipment, protective systems, devices, components and combinations of these.
Data and Features
Tabela de dimensões
Para selecionar o diâmetro nominal (DN), veja os diagramas de vazão nas páginas seguintes
| DN | a | b | c* | c* |
| IIB3 | IIC | |||
| 50 / 2" | 100 | 200 | 175 | 185 |
| 80 / 3" | 150 | 240 | 180 | 195 |
| 100 / 4" | 200 | 295 | 220 | 235 |
| 150 / 6" | 300 | 550 | 260 | 270 |
| 200 / 8" | 300 | 550 | 260 | 270 |
| 250 / 10" | 400 | 600 | 355 | 365 |
| 300 / 12" | 400 | 600 | 340 | 350 |
| 350 / 14" | 600 | 800 | 390 | 400 |
| 400 / 16" | 600 | 800 | 380 | 390 |
| 500 / 20" | 700 | 1000 | 400 | 410 |
| 600 / 24" | 800 | 1200 | 475 | 485 |
| 700 / 28" | 1000 | 1400 | 505 | 515 |
| 800 / 32" | 1200 | 1600 | 550 | 560 |
Dimensões em mm
* c são valores de referência. As medidas exatas dependem da conexão flangeada.
Seleção do grupo de explosão
| MESG | Gr. expl. (IEC / CEN) | Grupo gás (NEC) |
| ≥ 0,65 mm | IIB3 | C |
| < 0,5 mm | IIC | B |
Aprovações especiais sob solicitação
Indicação da temperatura máx. de trabalho
| ≤ 60°C / 140°F | Ttemperatura máxima de trabalho admissível em °C |
| - | Designation |
temperaturas de trabalho mais elevadas, sob solicitação
Tipo de conexão flangeada
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
Outras conexões sob solicitação
Versão e especificação
Following designs are available:Calota de respiro em versão básicaLH/AD
Outros dispositivos especiais sob solicitação
Seleção do material do corpo
| Execução | A | B |
| Corpo | Aço | Aço inoxidável |
| Tampa | Aço inoxidável | Aço inoxidável |
| Tela de proteção | Aço inoxidável | Aço inoxidável |
| Conjunto abafador de chamas | A, B | B |
Materiais especiais sob solicitação
Combinações de material do conjunto abafador de chamas
| Execução | A | B |
| Armação do FLAMEFILTER® | Aço | Aço inoxidável |
| FLAMEFILTER® | Aço inoxidável | Aço inoxidável |
Materiais especiais sob solicitação
Diagrama de vazão
Este diagrama de vazão foi determinado em uma bancada de medição de vazão calibrada e certificada pela TÜV. A vazão V em m³/h se refere ao estado técnico padrão de ar, conforme ISO 6358 (20°C, 1bar). Para conversão em outras densidades e temperaturas, veja o cap. 1: Bases técnicas.
Applications