FA-CN-IIA1
In-Line Deflagration Flame Arrester for biogas, sewage gas and landfill gas, concentric design, bidirectional
Features
Extended Application Range
for Elevated Operating Temperatures and Pressures
Compact Design
Eases Installation Close to Floors and Walls
Spare Parts
Cost-Effective Spare Parts
Modular Design
Allows Replacement and Cleaning of Single FLAMEFILTER®
Low Costs
Low Operating and Lifecycle Costs
Bi-Directional Flame Transmission
Proof Design
Function and Description
Compact and Maintenance-Friendly Endurance-Burning-Proof In-Line Device
The Deflagration and Endurance Burning-Proof PROTEGO® FA-CN-IIA1 In-Line Flame Arrester was specially developed for bio-, sewage- and landfill-gas applications. With this device it is possible to protect compressors with high operating pressures and high operating temperatures. It can also be used as an endurance-burning-proof in-line device under atmospheric conditions, without temperature monitoring. The PROTEGO® FA-CN-IIA1 Deflagration Flame Arrester is a compact design utilizing an easy access cover for easy maintainability.
Main Component – PROTEGO® Flame Arrester Unit
The FLAMEFILTER® Unit can be removed and cleaned within moments without having to disassemble the pipe. 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. For this device the (L/D)max ratio is 50.
The In-Line Deflagration Flame Arrester is symmetrical and offers bidirectional flame transmission protection. The device consists of a 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. The number of FLAMEFILTER® discs and their gap size depend on the arrester‘s conditions of use.
For Explosion Group IIA1
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. This version of PROTEGO® FA-CN-IIA1 Flame Arrester protects against deflagrations and endurance burning of explosion group IIA1 – Methane (former designation Expl.gr. I).
Many Individual Certifications
PROTEGO® FA-CN devices for substances of explosion groups IIA, IIB3 and IIC (NEC groups D, C, and B) are shown on separate pages.
The standard design can be used up to an operating temperature of +60°C / 140°F and an absolute operating pressure up to 2.0 bar / 29.0 psi (DN 40/1½" and DN 50/2”) or 1,6 bar / 23.2 (DN 80/3” to DN 300/12”). Devices with special approval can be obtained for higher pressures (see table 3) and higher temperatures upon request.
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), please 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 | 105 / 4.13 | 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) |
| > 1.14 mm | IIA1 (I) |
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 | 2.0 / 29.0 | 2.0 / 29.0 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 | 1,6 / 23.2 |
| Pmax | 2,5 / 36.3 | 2,5 / 36.3 | 2,5 / 36.3 | 2,5 / 36.3 | 2,5 / 36.3 | 2,5 / 36.3 | 2,5 / 36.3 | 2,5 / 36.3 | ||
| Pmax | 4,5 / 65.3 | 4,5 / 65.3 | 4,5 / 65.3 | 4,5 / 65.3 | 4,5 / 65.3 | 4,5 / 65.3 | 4,5 / 65.3 | |||
| Pmax | 5 / 72.5 | 5 / 72.5 |
Pmax = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request
Specification of max. operating temperature
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature in °C |
| - | Designation |
higher operating temperatures upon request
Material selection
| Design | A | B | |
| Housing | Steel | Stainless Steel | |
| Cover | Steel | Stainless Steel | |
| Gasket | WS 3822 * | PTFE | |
| Flame arrester unit | Stainless Steel | Stainless Steel |
* for devices exposed to temperatures above 150°C / 302°F (T150), gaskets made of PTFE.
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”.
