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In-Line Deflagration Flame Arrester

eccentric design, bidirectional

Function and Description

The PROTEGO® FA-E series of in-line deflagration flame arresters is designed with an eccentric housing to automatically drain condensate build up in the housing. Due to its eccentric design the device can be installed in pipelines that run close to floors or walls and low points, where condensate can collect within the piping system, can be avoided. When installing the deflagration flame arrester, make sure that the distance between potential ignition sources and the location of the installed device, does not exceed the L/D ratio (pipe length/pipe diameter), for which the device was approved. According to EN ISO 16852 the installation limits are (L/D)max ≤ 50 for deflagration flame arresters of explosion groups IIA and IIB3 (NEC groups D to C) and (L/D)max ≤ 30 for explosion group IIC (NEC group B).

The devices are symmetrical and offer bidirectional flame transmission protection. The arrester essentially consists of two housing parts (1) and a PROTEGO® flame arrester unit (2) in the center. The PROTEGO® flame arrester unit is modular and consists of several FLAMEFILTER® discs (3) and spacers firmly held in a FLAMEFILTER® cage. The number of FLAMEFILTER® and their gap size depends arrester´s conditions of use.

By indicating the operating parameters such as temperature, pressure, explosion group and the composition of the fluid, the optimum deflagration flame arrester can be selected from a series of approved devices. The PROTEGO® FA-E series of deflagration flame arresters is available for substances from explosion groups IIA to IIC (NEC groups D to B).

The standard design can be used up to an operating temperature of +60°C / 140°F and an absolute operating pressure up to 1.1 bar / 15.9 psi. Devices with special approval can be obtained for higher pressures (see table 3) and higher temperatures upon request.

Type-approved in accordance with the current ATEX Directive and EN ISO 16852 as well as other international standards.

Features and Advantages

  • eccentric design prevents condensate build up
  • special design for elevated operating temperatures and pressures available
  • modular design enables each individual FLAMEFILTER® to be replaced
  • service friendly: FLAMEFILTER® can be cleaned easily
  • eccentric design eases installation close to fl oors and walls
  • bidirectional flame transmission proof design
  • protects against deflagrations for all explosion groups IIA,IIB3 and IIC (NEC groups D, C and B)
  • modular design reduces spare parts cost

Dimensions

To select the nominal size (DN), use the flow capacity charts on the following pages

Expl. Gr.DN25 / 1"32 / 1¼“40 / 1½“50 / 2"65 / 2½“80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
IIAa304 / 11.97304 / 11.97310 / 12.20314 / 12.36360 / 14.17364 / 14.33370 / 14.57434 / 17.09440 / 17.32450 / 17.72480 / 18.90500 / 19.69
IIB3a304 / 11.97304 / 11.97310 / 12.20314 / 12.36360 / 14.17364 / 14.33370 / 14.57434 / 17.09440 / 17.32450 / 17.72480 / 18.90500 / 19.69
IICa304 / 11.97304 / 11.97321 / 12.64325 / 12.80371 / 14.61375 / 10.83381 / 15.00445 / 17.52451 / 17.76461 / 18.15491 / 19.33511 / 20.12
b29 / 1.1429 / 1.1429 / 1.1429 / 1.1438 / 1.4938 / 1.4939 / 1.5365 / 2.5665 / 2.5655 / 2.1758 / 2.2860 / 2.36
c185 / 7.28185 / 7.28210 / 8.27210 / 8.27250 / 9.84250 / 9.84275 / 10.83385 / 15.16385 / 15.16450 / 17.72500 / 19.69575 / 22.64
d400 / 15.75400 / 15.75410 / 16.14410 / 16.14440 / 17.32440 / 17.32460 / 18.11520 / 20.47520 / 20.47540 / 21.26570 / 22.44600 / 23.62
Expl. Gr.DN25 / 1"32 / 1¼“40 / 1½“50 / 2"65 / 2½“80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
IIAa304 / 11.97304 / 11.97310 / 12.20314 / 12.36360 / 14.17364 / 14.33370 / 14.57434 / 17.09440 / 17.32450 / 17.72480 / 18.90500 / 19.69
IIB3a304 / 11.97304 / 11.97310 / 12.20314 / 12.36360 / 14.17364 / 14.33370 / 14.57434 / 17.09440 / 17.32450 / 17.72480 / 18.90500 / 19.69
IICa304 / 11.97304 / 11.97321 / 12.64325 / 12.80371 / 14.61375 / 10.83381 / 15.00445 / 17.52451 / 17.76461 / 18.15491 / 19.33511 / 20.12
b29 / 1.1429 / 1.1429 / 1.1429 / 1.1438 / 1.4938 / 1.4939 / 1.5365 / 2.5665 / 2.5655 / 2.1758 / 2.2860 / 2.36
c185 / 7.28185 / 7.28210 / 8.27210 / 8.27250 / 9.84250 / 9.84275 / 10.83385 / 15.16385 / 15.16450 / 17.72500 / 19.69575 / 22.64
d400 / 15.75400 / 15.75410 / 16.14410 / 16.14440 / 17.32440 / 17.32460 / 18.11520 / 20.47520 / 20.47540 / 21.26570 / 22.44600 / 23.62

Dimensions in mm / inches

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Material selection for housing

Design BCD
HousingSteelStainless SteelHastelloy
GasketPTFEPTFEPTFE
Flame arrester unitA,CCD
Design BCD
HousingSteelStainless SteelHastelloy
GasketPTFEPTFEPTFE
Flame arrester unitA,CCD

The housing can also be delivered in carbon steel with an ECTFE coating.Special materials upon request

Material combinations of flame arrester unit

DesignACD
FLAMEFILTER® cageSteelStainless SteelHastelloy
FLAMEFILTER®*Stainless SteelStainless SteelHastelloy
SpacersStainless SteelStainless SteelHastelloy
DesignACD
FLAMEFILTER® cageSteelStainless SteelHastelloy
FLAMEFILTER®*Stainless SteelStainless SteelHastelloy
SpacersStainless SteelStainless SteelHastelloy

*the FLAMEFILTER® is also available in the materials Tantalum, Inconel, Copper, etc. when the listed housing and cage materials are usedSpecial materials upon request.

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Selection of explosion group

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
< 0,50 mm (> 0,50 mm)IIC (IIB)B
MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
< 0,50 mm (> 0,50 mm)IIC (IIB)B

Special approvals upon request

Selection of max. operating pressure

Expl. Gr.DN25 / 1"32 / ¼"40 / 1½"50 / 2"65 / 2½"80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
IIAPmax1,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.3
IIB3Pmax1,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.3
IICPmax1,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,2 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.9
Expl. Gr.DN25 / 1"32 / ¼"40 / 1½"50 / 2"65 / 2½"80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
IIAPmax1,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.3
IIB3Pmax1,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.31,6 / 23.3
IICPmax1,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,2 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.9

Pmax = maximum allwowable operating pressure in bar / psi (absolute), higher operating pressure upon request

Specification of max. operating temperature

≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation
≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation

higher operating temperatures upon request

Flange connection type

EN 1092-1; Form B1
ASME B16.5; 150 lbs RFSF
EN 1092-1; Form B1
ASME B16.5; 150 lbs RFSF

other connections upon request

Design Types and Specifications

There are three different designs:

Basic in-line deflagration flame arrester

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In-line deflagration flame arrester with integrated temperature sensor* as additional protection against short-time burning from one side

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In-line deflagration flame arrester with two integrated temperature sensors* for additional protection against short-time burning from both sides

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Basic in-line deflagration flame arrester

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In-line deflagration flame arrester with integrated temperature sensor* as additional protection against short-time burning from one side

FA-E - T

In-line deflagration flame arrester with two integrated temperature sensors* for additional protection against short-time burning from both sides

FA-E - TB

Additional special devices available upon request
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)

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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). Conversion to other densities and temperatures refer to Vol. 1: “Technical Fundamentals”.

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