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FA-I

In-Line Deflagration Flame Arrester concentric design, bidirectional

Function and Description

In the development of the PROTEGO® FA-I in-line deflagration flame arrester, special effort was made to optimize the fluid dynamic flow characteristics. For a given flange connection size of the flame arrester, the FLAMEFILTER® size can be chosen for the most adequate flow capacity. 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 tested (see table 4).

The deflagration flame arrester is symmetrical and offers bidirectional flame transmission protection. The device essentially consists of two housing parts (1) and the 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® discs and their gap size depends on the arrester´s conditions of use.

Providing the operating conditions such as the temperature, pressure, explosion group and the composition of the fluid, enables PROTEGO® to select the best deflagration flame arrester for your application. The PROTEGO® FA-I series of deflagration flame arresters is available for substances of explosion groups IIA and IIB3 (NEC groups D and C (MESG ≥ 0.65 mm)).

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 approvals 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

  • optimized flow capacity
  • different series allow increase of FLAMEFILTER® size for given flange connection resulting in lower pressure drop across the device
  • option for integrated cleaning nozzles can be provided
  • modular flame arrester unit enables each individual FLAMEFILTER® to be replaced and cleaned
  • bidirectional flame transmission proof design
  • protects with deflagrations for explosion groups IIA and IIB3 (NEC groups D and C)
  • design available for elevated operating temperatures and pressures
  • available sizes from DN 50 / 2” to DN 1000 / 40”
  • lowest pressure drop results in low operating and lifecycle costs
  • modular design reduces spare parts cost

Dimensions

To select nominal width/nominal size (NG/DN) - combination, please use the flow capacity charts on the following pages. Additional nominal width/nominal size (NG/DN) - combinations for improved flow capacity upon request

standard
NG150 / 6"150 / 6"200 / 8"300 / 12"400 / 16"500 / 20"600 / 24"800 / 32"1000 / 40"1200 / 48"1400 / 56"1600 / 64
DN≤50 / 2"80 / 3"≤100 / 4"≤150 / 6"≤200 / 8"≤250 / 10"≤300 / 12"≤400 / 16"≤ 00 / 20"≤600 / 24"≤800 / 32"≤800 / 32"
a285 / 11.22285 / 11.22340 / 13.39445 / 17.52565 / 22.24670 / 26.38780 / 30.71975 / 38.391175 / 46.261405 / 55.311630 / 64.171830 / 72.05
Expl. Gr.IIA b*364 / 14.33364 / 14.33452 / 17.79584 / 22.99638 / 25.12688 / 27.09800 / 31.50900 / 35.431000 / 39.371100 / 43.311350 / 53.151450 / 57.09
IIB3 b*364 / 14.33364 / 14.33464 / 18.27596 / 23.46650 / 25.59700 / 31.50800 / 31.50900 / 35.431000 / 39.371100 / 43.311350 / 53.151450 / 57.09
c500 / 19.69500 / 19.69520 / 20.47570 / 22.44620 / 24.41670 / 26.38700 / 31.50900 / 35.431000 / 39.371100 / 43.311350 / 53.151450 / 57.09
standard
NG150 / 6"150 / 6"200 / 8"300 / 12"400 / 16"500 / 20"600 / 24"800 / 32"1000 / 40"1200 / 48"1400 / 56"1600 / 64
DN≤50 / 2"80 / 3"≤100 / 4"≤150 / 6"≤200 / 8"≤250 / 10"≤300 / 12"≤400 / 16"≤ 00 / 20"≤600 / 24"≤800 / 32"≤800 / 32"
a285 / 11.22285 / 11.22340 / 13.39445 / 17.52565 / 22.24670 / 26.38780 / 30.71975 / 38.391175 / 46.261405 / 55.311630 / 64.171830 / 72.05
Expl. Gr.IIA b*364 / 14.33364 / 14.33452 / 17.79584 / 22.99638 / 25.12688 / 27.09800 / 31.50900 / 35.431000 / 39.371100 / 43.311350 / 53.151450 / 57.09
IIB3 b*364 / 14.33364 / 14.33464 / 18.27596 / 23.46650 / 25.59700 / 31.50800 / 31.50900 / 35.431000 / 39.371100 / 43.311350 / 53.151450 / 57.09
c500 / 19.69500 / 19.69520 / 20.47570 / 22.44620 / 24.41670 / 26.38700 / 31.50900 / 35.431000 / 39.371100 / 43.311350 / 53.151450 / 57.09

Dimensions in mm / inches *Dimensions b only for P1.2 (IIA) and P1.1 (IIB3)

FA-I

Material selection for housing

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

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

Material combinations of flame arrester unit

Design ACD
FLAMEFILTER® cageSteelStainless SteelHastelloy
FLAMEFILTER®*Stainless SteelStainless SteelHastelloy
SpacersStainless SteelStainless SteelHastelloy
Design ACD
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.

FA-I

Selection of explosion group

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C

Special approvals upon request

Selection of max. operating pressure

Expl. Gr.NG150 / 6''150 / 6''200 / 8''300 / 12''400 / 16''500 / 20''600 / 24''800 / 32''1000 / 40''1200 / 48''1400 / 56'1600 / 64''
DN50  / 1"80  / 3"100  / 4"150 / 6"200 / 8"250 / 10"300  / 12"400 / 16"500  / 20"600  / 24"800 / 32"800 / 32"
IIAPmax1,8 / 26.11,8 / 26.11,5 / 21.71,5 / 21.71,5 / 21.71,5 / 21.71,5 / 21.71,4 / 20.31,3 / 18.81,3 / 18.81,2 / 17.41,1 / 15.9
IIB3Pmax1,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,1 / 15.91,1 / 15.91,1 / 15.9
Expl. Gr.NG150 / 6''150 / 6''200 / 8''300 / 12''400 / 16''500 / 20''600 / 24''800 / 32''1000 / 40''1200 / 48''1400 / 56'1600 / 64''
DN50  / 1"80  / 3"100  / 4"150 / 6"200 / 8"250 / 10"300  / 12"400 / 16"500  / 20"600  / 24"800 / 32"800 / 32"
IIAPmax1,8 / 26.11,8 / 26.11,5 / 21.71,5 / 21.71,5 / 21.71,5 / 21.71,5 / 21.71,4 / 20.31,3 / 18.81,3 / 18.81,2 / 17.41,1 / 15.9
IIB3Pmax1,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,1 / 15.91,1 / 15.91,1 / 15.9

Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request

Max. allowable L/D-ratio

standardNG150 / 6"150 / 6"200 / 8''300 / 12''400 / 16''500 / 20''600 / 24''800 / 32"1000 / 40''1200 / 48''1400 / 56''1600 / 64''
DN50  / 1"80  / 3"100  / 4"150 / 6"200 / 8"250 / 10"

300 /  
12"

400  / 16"500  / 20"600  / 24"800 / 32"800 / 32"
IIA(L / D)max505050505050505050505050
IIAPmax1,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,3 / 18.81,3 / 18.81,2 / 17.41,1 / 15.9
IIADesignation-----------
IIB3(L / D)max505040403535353030302525
IIB3Pmax1,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.9
IIB3Designation--X6X6X7X7X7X8X8X8X9X9
standardNG150 / 6"150 / 6"200 / 8''300 / 12''400 / 16''500 / 20''600 / 24''800 / 32"1000 / 40''1200 / 48''1400 / 56''1600 / 64''
DN50  / 1"80  / 3"100  / 4"150 / 6"200 / 8"250 / 10"

300 /  
12"

400  / 16"500  / 20"600  / 24"800 / 32"800 / 32"
IIA(L / D)max505050505050505050505050
IIAPmax1,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,3 / 18.81,3 / 18.81,2 / 17.41,1 / 15.9
IIADesignation-----------
IIB3(L / D)max505040403535353030302525
IIB3Pmax1,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.9
IIB3Designation--X6X6X7X7X7X8X8X8X9X9

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

FA-I - –

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

FA-I - T

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

FA-I - TB

Basic in-line deflagration flame arrester

FA-I - –

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

FA-I - T

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

FA-I - TB

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

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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