FA-I-PTFE
In-Line Deflagration Flame Arrester concentric design, bidirectional
Features
Reduced Number of FLAMEFILTER® Discs
Low Number of FLAMEFILTER® Discs Due to Shock Absorber Technology
Low Costs
Low Operating and Lifecycle Costs
Modular Design
Allows Replacement and Cleaning of Single FLAMEFILTER®
Bi-Directional Flame Transmission
Proof Design
Temperature Sensors Possible
Use of Temperature Sensors for G 1½ and G 2 Is Possible
Easy Maintenance
Without Disassembling of the FLAMEFILTER®
Function and Description
Unique Worldwide
The In-Line Deflagration Flame Arresters Type PROTEGO® FA-I-PTFE are the latest generation of Flame Arresters and are distinguished by their unique resistance to adhesive and corrosive media. The use of fluoroplastics as a high-tech housing coating and as solid material for the Flame Arrester Element is unique throughout the world.
Bidirectional Flame Transmission Protection
When installing the Deflagration Flame Arrester make sure that the distance between potential ignition sources and the location of the installed device, the L/D ratio (pipe length/pipe diameter), does not exceed the value of 50.
The Deflagration Flame Arrester is symmetrical and offers bidirectional flame transmission protection.
Main Component – PROTEGO® Flame Arrester Unit
The arrester essentially consists of two coated 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 PTFE-FLAMEFILTER® discs and their gap size depends on the arrester‘s conditions of use.
For Explosion Group IIA
The Deflagration Flame Arrester PROTEGO® FA-I-PTFE can be used for explosion group IIA (NEC group D). The standard design is approved at an operating temperature up to +60°C / 140°F. The maximum allowable operating pressure depends on nominal diameter (DN) and nominal size (NG) and amounts to a maximum of 1.6 bar / 23.2 psi absolute (for DN 100 / 4” and DN 150 / 6” see table 3).
EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product Data
Dimensions
To select series and nominal size (DN) - nominal width (NG) combination, please use the flow capacity chart on the following page
| DN | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" |
| NG | 150 / 6" | 150 / 6" | 200 / 8" | 300 / 12" |
| a | 287 / 11.30 | 287 / 11.30 | 342 / 13.46 | 447 / 17.60 |
| b | 380 / 14.96 | 380 / 14.96 | 468 / 18.43 | 612 / 24.09 |
| c | 430 / 16.93 | 430 / 16.93 | 480 / 18.90 | 530 / 20.87 |
Dimensions in mm / inches
Selection of explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0.90 mm | IIA | D |
Special approvals upon request
Selection of max. operating pressure
| DN | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" |
| NG | 150 / 6" | 150 / 6" | 200 / 8" | 300 / 12" |
| Pmax | 1.6 / 23.2 | 1.6 / 23.3 | 1.2 / 17.4 | 1.2 / 17.4 |
Pmax = in bar / psi absolut, 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 for housing
| Design | A |
| Housing | Steel with an ECTFE coating |
| Gasket | PTFE |
| Flame arrester unit | A, B, C |
Special materials upon request
Material combinations of flame arrester unit
| Design | A | B | C |
| FLAMEFILTER® cage | Steel with an ECTFE coating | Hastelloy | Stainless Steel |
| Spider rings | Steel with an ECTFE coating | Hastelloy | Stainless Steel |
| FLAMEFILTER®* | PTFE* | PTFE* | PTFE* |
| Spacer | PEEK / ETFE / FEP | PEEK / ETFE / FEP | PEEK / ETFE / FEP |
* electrically conductive
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”.
