LH/EB
Deflagration Flame Arrester, endurance burning proof, End-of-Line
Features
Comprehensive Weather Protection
Weather Hood With Protection Screen Protects the PROTEGO® Flame Arrester Unit Against Environmental Impact, Such as Nesting Animals and Weather Conditions
Visible Fire Indication by Tilting Weather Hood
in Case of Fire, the Weather Hood Opens, Allowing the Flame to Be Seen From a Far Distance
Chemically Resistant
Centrally Aligned Melting Element Is Resistant to Chemicals
Safety Against Endurance Burning
Protection against Atmospheric Deflagration and Endurance Burning
Mining
Certificates for Mining are Available
Methane/Air-Mixtures
Most Efficient Deflagration Flame Arrester for Methane/Air Mixtures
Function and Description
Protection Against Atmospheric Deflagration and Endurance Burning of Methane/Air Mixtures
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® LH/EB End-of-Line
Deflagration Flame Arrester
Deflagration flame arrester
Flame arrester designed to prevent the transmission of a deflagration. It can be an end-of-line flame arrester or an in-line flame arrester.
is used to protect process engineering apparatus and vessels which are not pressurized and process Methane/Air mixtures. 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.
provides protection against flame transmission through atmospheric
deflagration
Deflagration
Explosion propagating at subsonic velocity (EN 1127-1:1997).
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
Endurance burning
Stabilized burning for an unlimited time.
or atmospheric deflagration propagating into the
vessel
Vessel
Container or structural envelope in which materials are processed, treated or stored.
or plant.
Main Component – PROTEGO® Flame Arrester Unit
The PROTEGO® LH/EB consists of a
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
Weather hood
A weather hood is a cover to protect the internal components of a device from environmental influences.
(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
Flame arrester
Device fitted to the opening of an enclosure, or to the connecting pipe work of a system of enclosures, and whose intended function is to allow flow but prevent the transmission of a flame.
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
FLAMEFILTER® casing
Enclosure for FLAMEFILTER® including insert rings.
.
For Explosion Group IIA1 - Methan
The PROTEGO® LH/EB Series End-of-Line Deflagration Flame Arrester is available for substances for
explosion
Explosion
Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously.
group IIA1 - methane (former designation Expl.gr. I).
The standard design can be used with
operating temperature
Operating temperature
Temperature reached when the equipment is operating under design conditions.
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.
Product Data
Dimensions
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 charts on the following pages
| 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 / 23.62 | 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
Selection of explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 1,14 mm | IIA1 (I)* | - |
*former designation Expl.gr. I
Special approvals upon request
Material selection for housing
| Design | A | B |
| Housing | Steel | Stainless Steel |
| Weather hood | Steel | Stainless Steel |
| Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. | A, B | B |
Special materials upon request
Material combinations of flame arrester unit
| Design | A | B |
| FLAMEFILTER® cage | Steel | Stainless Steel |
| FLAMEFILTER® | Stainless Steel | Stainless Steel |
Special materials upon request
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other types upon request
Flow Capacity Chart
The flow capacity charts have been determined with a calibrated and TÜV certified flow capacity test rig. Volume flow V in (m³/h) and CFH refer to the standard reference conditions of air ISO 6358 (20°C, 1bar). For conversion to other densities and temperatures refer to Sec. 1: “Technical Fundamentals”.
Contact CSR Department
