Protego LH / EB Deflagration Flame Arrester, End of Line, ATEX
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Endurance Burning-Proof, End-of-Line
Explosion Group: IIA1
- Most efficient deflagration flame arrester for methane/air mixtures certificates for mining are available
- Protection against atmospheric deflagration and endurance burning
- Weather hood protects against environmental impact (i.e. weather, bird nests, etc.)
- Weather hood will open and signals the impact of a flame
- Fusible link is resistant against chemicals
- Maintenance friendly design
Function and Description
The PROTEGO LH/EB end-of-line deflagration flame arrester is used to protect process engineering apparatus and vessels which are not pressurized and process Methane/Air mixtures. The device provides protection against flame transmission through atmospheric deflagration and stabilized flames which can burn for a very long time. This device is specifically applied to vent lines of decommissioned underground mines. Other areas of application are biogas, landfill gas and sewage gas. The device is installed on suction and vent lines, with the goal to prevent flame transmission caused by endurance burning or atmospheric deflagration propagating into the vessel or plant.
The PROTEGO LH/EB consists of a housing (1), a weather hood (2) and the PROTEGO flame arrester unit (3). During normal operation, the metal weather hood is in a closed position. If a flame burns on the flame arrester element surface, the fusible link (5), located in a center position, will melt and an externally located weight will move the weather hood into the open position. The PROTEGO flame arrester unit consists of a FLAMEFILTER (4), which is installed in a FLAMEFILTER casing.
The PROTEGO LH/EB series end-of-line deflagration flame arrester is available for substances for explosion group IIA1 - methane (former designation Expl.gr. I).
The standard design can be used with operating temperature of up to +60°C / 140°F.
Special certificates for mining are available and the device is type-approved according to ATEX Directive and EN ISO 16852 as well as other international standards.
Dimensions| DN | 150 / 6" | 200 / 8" | 250 / 10" | 300 / 12" | 350 / 14" | 400 / 16" |
|
| NG | 400 / 16" | 400 / 16" | 400 / 16" | 400 / 16" | 400 / 16" | 400 / 16" |
| a | 600 / 23.62 | 600 / 16" | 600 / 23.62 | 600 / 23.62 | 600 / 23.62 | 600 / 23.62 |
| b | 340 / 13.39 | 340 / 13.39 | 340 / 13.39 | 340 / 13.39 | 340 / 13.39 | 340 / 13.39 |
| c | 600 / 23.62 | 600 / 23.62 | 600 / 23.62 | 600 / 23.62 | 600 / 23.62 | 600 / 23.62 |
| d | 350 / 13.78 | 350 / 13.78 | 350 / 13.78 | 350 / 13.78 | 350 / 13.78 | 350 / 13.78 |
Dimensions in mm / inches * c are reference values.
Exact measures depend on the flange connection.
Material Selection For Housing| Design | A | B |
|
| Housing | Steel | Stainless Steel |
| Weather Hood | Stainless Steel | Stainless Steel |
| Protection screen | Stainless Steel | Stainless Steel |
| Flame arrester unit | A, B | B |
Material Selection Of Flame Arrester Unit| Design | A | B |
|
| FLAMEFILTER cage | Steel | Stainless Steel |
| FLAMEFILTER | Stainless Steel | Stainless Steel |
Selection of Explosion Group| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
|
| < 1.14 mm | IIA1 (I)* | - |
Flange Connection Type| EN 1092-1; Form B1 |
|
| ASME B16.5 CL 150 R.F |
Other types upon request.
Design Types and Specifications| Deflagration flame arrester, end-of-line, basic design | LH / EB |
|
Special designs available on request.
