FA-I
In-Line Deflagration Flame Arrester concentric design, bidirectional
Features
Function and Description
Efficient Flow Performance
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 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).
Main Component – PROTEGO® Flame Arrester Unit
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® casing. The number of FLAMEFILTER® discs and their gap size depends on the arrester´s intended use.
For Explosion Groups IIA to IIB3
Specifying 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)).
Many Individual Certifications
The standard design can be used with an operating temperature of up to +60°C / 140°F and an absolute operating pressure up to 1.1 bar / 15.9 psi. Devices with special approvals for higher pressures (see table 3) and higher temperatures are available upon request. EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
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 | |||||||||||||
| NG | 150 / 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" | |
| a | 285 / 11.22 | 285 / 11.22 | 340 / 13.39 | 445 / 17.52 | 565 / 22.24 | 670 / 26.38 | 780 / 30.71 | 975 / 38.39 | 1175 / 46.26 | 1405 / 55.31 | 1630 / 64.17 | 1830 / 72.05 | |
| Expl. Gr. | IIA b* | 364 / 14.33 | 364 / 14.33 | 452 / 17.79 | 584 / 22.99 | 638 / 25.12 | 688 / 27.09 | 800 / 31.50 | 900 / 35.43 | 1000 / 39.37 | 1100 / 43.31 | 1350 / 53.15 | 1450 / 57.09 |
| IIB3 b* | 364 / 14.33 | 364 / 14.33 | 464 / 18.27 | 596 / 23.46 | 650 / 25.59 | 700 / 31.50 | 800 / 31.50 | 900 / 35.43 | 1000 / 39.37 | 1100 / 43.31 | 1350 / 53.15 | 1450 / 57.09 | |
| c | 500 / 19.69 | 500 / 19.69 | 520 / 20.47 | 570 / 22.44 | 620 / 24.41 | 670 / 26.38 | 700 / 31.50 | 900 / 35.43 | 1000 / 39.37 | 1100 / 43.31 | 1350 / 53.15 | 1450 / 57.09 |
Dimensions in mm / inches
*Dimensions b only for P1.2 (IIA) and P1.1 (IIB3)
Material selection for housing
| Design | A | B | C |
| Housing | Steel | Stainless Steel | Hastelloy |
| Gasket | PTFE | PTFE | PTFE |
| Flame arrester unit | A, B | C | D |
The housing can also be delivered in carbon steel with an ECTFE coating. Special materials upon request.
Material combinations of flame arrester unit
| Design | A | C | D |
| FLAMEFILTER® cage | Steel | Stainless Steel | Hastelloy |
| FLAMEFILTER®* | Stainless Steel | Stainless Steel | Hastelloy |
| Spacers | Stainless Steel | Stainless Steel | Hastelloy |
* the FLAMEFILTER® is also available in the materials Tantalum, Inconel, Copper, etc. when the listed housing and cage materials are used
Special materials upon request.
Selection of explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0,90 mm | IIA | D |
| ≥ 0,65 mm | IIB3 | C |
Special approvals upon request
Selection of max. operating pressure
| Expl. Gr. | NG | 150 / 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 / 1" | 80 / 3" | 100 / 4" | 150 / 6" | 200 / 8" | 250 / 10" | 300 / 12" | 400 / 16" | 500 / 20" | 600 / 24" | 800 / 32" | 800 / 32" | |
| IIA | Pmax | 1,8 / 26.1 | 1,8 / 26.1 | 1,5 / 21.7 | 1,5 / 21.7 | 1,5 / 21.7 | 1,5 / 21.7 | 1,5 / 21.7 | 1,4 / 20.3 | 1,3 / 18.8 | 1,3 / 18.8 | 1,2 / 17.4 | 1,1 / 15.9 |
| IIB3 | Pmax | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 |
Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request
Max. allowable L/D-ratio
| standard | NG | 150 / 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 / 1" | 80 / 3" | 100 / 4" | 150 / 6" | 200 / 8" | 250 / 10" | 300 / | 400 / 16" | 500 / 20" | 600 / 24" | 800 / 32" | 800 / 32" | |
| IIA | (L / D)max | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| IIA | Pmax | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,2 / 17.4 | 1,3 / 18.8 | 1,3 / 18.8 | 1,2 / 17.4 | 1,1 / 15.9 |
| IIA | Designation | - | - | - | - | - | - | - | - | - | - | - | |
| IIB3 | (L / D)max | 50 | 50 | 40 | 40 | 35 | 35 | 35 | 30 | 30 | 30 | 25 | 25 |
| IIB3 | Pmax | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 | 1,1 / 15.9 |
| IIB3 | Designation | - | - | X6 | X6 | X7 | X7 | X7 | X8 | X8 | X8 | X9 | X9 |
Specification of max. operating temperature
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature in °C |
| - | Designation |
higher operating temperatures upon request
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other connections upon request
Design Types and Specifications
There are three different designs:Additional special devices available upon request
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)
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”.
