LH/EB

Deflagration Flame Arrester, endurance burning proof, End-of-Line

Features

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
Safety Against Endurance Burning
Protection against Atmospheric Deflagration and Endurance Burning
Mining
Certificates for Mining are Available
Function and Description

Protection against atmospheric deflagration and endurance burning of Methane/Air mixtures

The PROTEGO® LH/EB end-of-line deflagration Deflagration Explosion propagating at subsonic velocity (EN 1127-1:1997). 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 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

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 (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 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.

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

DN150 / 6" 200 / 8"250 / 10"300 / 12" 350 / 14" 400 / 16"
NG400 / 16"400 / 16"400 / 16"400 / 16"400 / 16"400 / 16"
a600 / 23.62600 / 23.62600 / 23.62600 / 23.62600 / 23.62600 / 23.62
b340 / 13.39340 / 13.39340 / 13.39340 / 13.39340 / 13.39340 / 13.39
c600 / 23.62600 / 23.62600 / 23.62600 / 23.62600 / 23.62600 / 23.62
d350 / 13.78350 / 13.78350 / 13.78350 / 13.78350 / 13.78350 / 13.78

Dimensions in mm / inches

Selection of explosion group

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 1,14 mmIIA1 (I)*-

*former designation Expl.gr. I

Special approvals upon request

Flange connection type

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.

other types upon request

Design Types and Specifications

Following designs are available:
Deflagration flame arrester, end-of-line, basic designLH/EB

Special designs available on request

Material selection for housing

Design AB
HousingSteelStainless Steel
Weather hoodSteelStainless Steel
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. A, BB

Special materials upon request

Material combinations of flame arrester unit

Design  AB
FLAMEFILTER® cageSteelStainless Steel
FLAMEFILTER®Stainless SteelStainless Steel

Special materials 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”.

Applications