FA-CN-IIC
In-Line Deflagration Flame Arrester for hydrogen/air-mixtures, concentric design, bidirectional
Features
Spare Parts
Cost-Effective Spare Parts
Compact Design
Eases Installation Close to Floors and Walls
Modular Design
Allows Replacement and Cleaning of Single FLAMEFILTER®
Bi-Directional Flame Transmission
Proof Design
Provides Safety
Protects Against Deflagrations for All Explosion Groups IIA, IIB3 and IIC (NEC Groups D, C and B)
Any Installation Position
(taking the Set Pressure into Account)
Function and Description
Compact and Maintenance-Friendly Design
The PROTEGO® FA-CN In-Line Deflagration Flame Arrester is a compact design utilizing an easy access cover for easy maintenance. The special PROTEGO® FA-CN-IIC version was developed for hydrogen applications (group IIC vapors – NEC group B). The device is designed with relatively large gap widths – related to IIC – which causes minimum pressure loss and allows for permeation of small liquid droplets or particles.
Main Component – PROTEGO® Flame Arrester Unit
The PROTEGO® Flame Arrester Unit can be removed and cleaned in just a few simple steps having to disassemble the pipe. When installing the Deflagration Flame Arrester, make sure that the distance between potential ignition sources and thelocation of the installed device does not exceed the L/D ratio (pipe length/ pipe diameter) for which the device was approved (see table 4). The Deflagration Flame Arrester is symmetrical and offers bidirectional flame transmission protection. The device consists of the housing (1) with an easy access cover (3) 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.
For Explosion Group IIC
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 versions of PROTEGO® FA-CN-IIC Flame Arrester protect against deflagrations of fuel/air mixtures of explosion group IIC (NEC B). FA-CN devices for substances of explosion groups IIA1, IIA, and IIB3 (NEC D and C (MESG ≥ 0.65 mm) are shown on separate pages.
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.
Many Individual Certifications
EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product Data
Dimensions
To select the nominal size (DN), use the flow capacity charts on the following pages
| DN | 40 / 1½“ | 50 / 2“ | 65 / 2½“ | 80 / 3“ | 100 / 4“ | 125 / 5“ | 150 / 6“ | 200 / 8" | 250 / 10" | 300 / 12" |
| a | 210 / 8.27 | 215 / 8.46 | 235 / 9.25 | 240 / 9.45 | 265 / 10.43 | 305 / 12.01 | 310 / 12.20 | 300 / 11.81 | 320 / 12.60 | 350 / 13.78 |
| b | 105 / 4.13 | 105 / 4.13 | 132 / 5.2 | 132 / 5.2 | 150 / 5.91 | 197 / 7.75 | 197 / 7.75 | 220 / 8.66 | 260 / 10.24 | 295 / 11.61 |
| c | 200 / 7.87 | 200 / 7.87 | 260 / 10.24 | 260 / 10.24 | 308 / 12.13 | 415 / 16.34 | 415 / 16.34 | 446 / 17.56 | 520 / 20.47 | 600 / 23.62 |
| d | 130 / 5.12 | 130 / 5.12 | 185 / 7.28 | 185 / 7.28 | 220 / 8.66 | 310 / 12.20 | 310 / 12.20 | 355 / 13.98 | 420 / 16.54 | 490 / 19.29 |
Dimensions in mm / inches
Selection of explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| < 0,50 mm | IIC | B |
Special approvals upon request
Selection of max. operating pressure
| DN | 40 / 1½" | 50 / 2" | 65 / 2½" | 80 / 3" | 100 / 4" | 125 / 5" | 150 / 6" | 200 / 8'' | 250 / 10'' | 300 / 12'' |
| 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 |
Pmax = maximum allwowable operating pressure in bar / psi absolute, higher operating pressure upon request
Max. allowable L/D-ratio
| DN | 40 / 1½" | 50 / 2" | 65 / 2½" | 80 / 3" | 100 / 4" | 125 / 5" | 150 / 6" | 200 / 8'' | 250 / 10'' | 300 / 12'' |
| (L / D)max | 30 | 30 | 10 | 10 | 10 | 20 | 20 | 10 | 10 | 5 |
| Designation | - | - | X12 | X12 | X12 | X10 | X10 | X12 | X12 | X13 |
Material selection
| Design | A | B |
| Housing | Steel | Stainless Steel |
| Cover | Steel | Stainless Steel |
| Gasket | PTFE | PTFE |
| Flame arrester unit | Stainless Steel | Stainless Steel |
Special materials upon request
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other connections 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”.
