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EB

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

  • weather hood provides protection against environmental impact (harsh weather conditions, bird nests, etc.)
  • weather hood will open and signal the impact of a flame
  • protection against atmospheric deflagration and endurance burning of pure hydrocarbons
  • fusible link is resistant against chemicals
  • modular design allows replacement of single FLAMEFILTER®
  • easy maintenance without disassembling of the FLAMEFILTER®
  • modular design results in low spare part costs

Function and Description

The PROTEGO® EB end-of-line deflagration flame arrester provides protection against atmospheric deflagration and long-lasting stabilized flames, called endurance burning. The device is typically installed on vent lines of vessels and plant equipment which is not pressurized. The device prevents flame transmission from endurance burning or atmospheric deflagration into the vessel or plant.

The PROTEGO® EB-IIA consists of the PROTEGO® flame arrester unit (1) and the metal weather hood (2). During normal operation, the metal weather hood is in a closed position. If a stabilized flame burns on the flame arrester element surface, the melting element (3), located in a center position, will melt and let the spring-loaded weather hood move into the open position. The PROTEGO® flame arrester unit consists of one or more FLAMEFILTER® (5), which are installed in a FLAMEFILTER® casing (4), a fixation element (6) and an insert ring (7). The FLAMEFILTER® gap size, height, and quantity depend on the device’s intended use.

The PROTEGO® EB series end-of-line deflagration flame arrester is available for substances from explosion group IIA and IIB (NEC group D and 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.

Dimensions DN 25 - 150 for EB-IIA and IIB

To select the nominal size (DN), please use the flow capacity chart on the following page

DN25 / 1"32 / 1¼“40 / 1½“50 / 2“65 / 2½“80 / 3“100 / 4"125 / 5"150 / 6"
a218 / 8.58218 / 8.58218 / 8.58218 / 8.58218 / 8.58353 / 13.90353 / 13.90353 / 13.90353 / 13.90
b113 / 4.45113 / 4.45113 / 4.45113 / 4.45113 / 4.45113 / 4.45113 / 4.45113 / 4.45113 / 4.45
c232 / 9.13232 / 9.13232 / 9.13232 / 9.13232 / 9.13306 / 12.05306 / 12.05306 / 12.05306 / 12.05
d222 / 8.74222 / 8.74222 / 8.74222 / 8.74222 / 8.74355 / 13.98355 / 13.98355 / 13.98355 / 13.98
e217 / 8.54217 / 8.54217 / 8.54217 / 8.54217 / 8.54322 / 12.68322 / 12.68322 / 12.68322 / 12.68
EB-IIA and IIB
with cone / nozzle**
DN50 / 2"80 / 3"100 / 4"150 / 6"
DN2≤50 / 2“≤80 / 3“≤100 / 4≤150 / 6“
b*238 / 9.37263 / 10.35383 / 15.08313 / 12.32
Dimensions DN 200 - 800 /
8“ - 32“ for EB-IIA
DN200 / 8"300 / 12"400 / 16"500 / 20"600 / 24"800 / 32“
a405 / 15.94555 / 21.85705 / 27.75855 / 33.661005 / 39.571210 / 47.64
b177 / 6.97206 / 8.11235 / 9.25265 / 10.43294 / 11.57330 / 12.99
c496 / 19.53650 / 25.59802 / 31.57987 / 38.861137 / 44.761336 / 52.60
d900 / 35.431200 / 47.241500 / 59.061820 / 71.652120 / 83.462525 / 99.41
f450 / 17.72600 / 23.62750 / 29.53920 / 36.221070 / 42.131270 / 50.00
g51 / 2.0180 / 3.15109 / 4.29138 / 5.43167 / 6.57204 / 8.03
EB-IIA with cone / nozzle**
DN200 / 8"300 / 12"400 / 16"500 / 20"600 / 24"800 / 32"
DN2≤200 / 8“≤300 / 12“≤400 / 16“≤500 / 20“≤600 / 24“≤800 / 32“
b*401 / 15.94456 / 17.95535 / 21.06614 / 24.17693 / 27.28830 / 32.68
Dimensions in mm / inches ** combinations (DN/DN2) please use the table on the following page

Combination (DN/DN2) for EB with cone

Flow capacity charts for EB-DN/DN2-IIA/IIB with cone upon request

DN 50 / 2“ 80 / 3“ 100 / 4“ 150 / 6“ 200 / 8“ 300 / 12“ 400 / 16“ 500 / 20“ 600 / 24“ 800 / 32“
DN2
20 / ¾“ IIA / IIB IIA / IIB IIA / IIB IIA / IIB
25 / 1“ IIA / IIB IIA / IIB IIA / IIB IIA / IIB
32 / 1¼" IIA / IIB IIA / IIB IIA / IIB IIA / IIB
40 / 1½" IIA / IIB IIA / IIB IIA / IIB IIA / IIB
50 / 2“ IIA / IIB IIA / IIB IIA / IIB IIA / IIB IIA
65 / 2½“ IIA / IIB IIA / IIB IIA / IIB
80 / 3“ IIA / IIB IIA / IIB IIA / IIB IIA IIA
100 / 4“ IIA / IIB IIA / IIB IIA IIA
125 / 5“ IIA / IIB IIA
150 / 6“ IIA / IIB IIA IIA IIA
200 / 8“ IIA IIA IIA IIA IIA
250 / 10“ IIA IIA IIA
300 / 12“ IIA IIA IIA
350 / 14“ IIA IIA
400 / 16“ IIA IIA IIA
450 / 18“ IIA IIA IIA
500 / 20“ IIA IIA
600 / 24“ IIA
700 / 28“ IIA

Material selection for housing

Design AB
flange ring Steel Stainless Steel
Weather hood Steel Stainless Steel
cone / nozzle Steel Stainless Steel
Flame arrester unitA, B, CB, C
Special materials upon request

Material combinations of flame arrester unit

Design ABC
FLAMEFILTER® cageSteelStainless SteelStainless Steel
/ Hastelloy
FLAMEFILTER®Stainless SteelStainless SteelHatselloy
Spider ringSteelStainless SteelStainless Steel
/ Hastelloy
Special materials upon request

Selection of explosion group

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,50 mmIIBB
Special approvals upon request

Flange connection type

EN 1092-1 (without cone); EN 1092-1; Form B1 (with cone / nozzle)
ASME B16.5 (without cone); ASME B16.5 CL 150 R.F. (with cone / nozzle)
other types upon request

Design Types and Specifications

There are three different designs:

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

EB

End-of-line deflagration flame arrester, with cone

EB - DN/DN2

End-of-line deflagration flame arrester, with cone and heating jacket

EB - H - DN/DN2

Special designs available on request

Flow Capacity Chart

Remark: Flow capacity charts for EB-DN/DN2-IIA/IIB with cone upon request

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”.

EB