Protego BR
PROTEGO®
Excellence in Safety and Environment

FA-G

In-Line Deflagration Flame Arrester concentric design, bidirectional

Features

Versatile Application Options
Various Uses Possible
Modular Design
Allows Replacement and Cleaning of Single FLAMEFILTER®
Fastest Disassembly and Assembly
of Single FLAMEFILTER®
Pipe Thread Connection
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)
Temperature Sensors Possible
Use of Temperature Sensors for G 1½ and G 2 Is Possible
Spare Parts
Cost-Effective Spare Parts
Function and Description

Compact Design of the In-Line Deflagration Flame Arrester

The compact design of the PROTEGO® FA-G In-Line Deflagration Flame Arrester makes it the state-of-the-art technology for installation in pipes with diameters of up to 2”. The devices are installed with minimal distance to the burner to prevent flashback into the fuel feed lines. 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 approved. As per EN ISO 16852, the L/D ratio is limited to (L/D)max ≤ 50 for Deflagration Flame Arresters of explosion groups IIA and IIB3 (NEC groups D and C {MESG ≥ 0.65 mm}) and to (L/D)max ≤ 30 for explosion group IIC (NEC group B).

Main Component – PROTEGO® Flame Arrester Unit

The In-Line Deflagration Flame Arrester is symmetrical and offers bi-directional flame transmission protection. The device consists of two housing parts (1) and a PROTEGO® Flame Arrester Unit or a FLAMEFILTER® (2) and spacers in the center. The number of FLAMEFILTER® discs and their gap size depend on the operating conditions, such as the temperature, pressure, explosion group, and the composition of the fluid. The PROTEGO® FA-G Series In-Line Deflagration Flame Arresters is available for explosion groups IIA, IIB3, and IIC (NEC groups D, C {MESG ≥ 0.65 mm} and B).

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 acc. to table 3. Devices with special approval for higher pressures 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.
Product Data

Dimensions

To select the nominal size (DN), use the flow capacity charts on the following pages

DN G ½" G ¾" G 1" G 1 ¼"G 1 ½" G 2"
a80 / 3.1580 / 3.15100 / 3.94100 / 3.94155 / 6.10155 / 6.10
b55 / 2.1755 / 2.1776 / 2.9976 / 2.99124 / 4.88124 / 4.88
c (IIA bis IIB3)100 / 3.94100 / 3.94110 / 4.33110 / 4.33170 / 6.69170 / 6.69
c (IIB und IIC)112 / 4.41112 / 4.41122 / 4.80122 / 4.80170 / 6.69170 / 6.69
d————400 / 15.75400 / 15.75
SW32 / 1.2632 / 1.2650 / 1.9750 / 1.9775 / 2.9575 / 2.95

Dimensions in mm / inches, SW= width across flats

Selection of explosion group

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
< 0,50 mmIICB

Special approvals upon request

Selection of max. operating pressure

Expl. GrDN  G ½" G ¾"  G 1"  G 1¼"  G 1½"  G 2'' 
IIAPmax1,4 / 20.31,4 / 20.31,4 / 20.31,4 / 20.31,5 / 21.71,5 / 21.7
IIB3Pmax1,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.41,2 / 17.4
IICPmax1,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.91,1 / 15.9

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

Specification of max. operating temperature

≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation

higher operating temperatures upon request

Material selection

DesignBC
HousingStainless SteelHastelloy
GasketPTFEPTFE
FLAMEFILTER®*Stainless SteelHastelloy

* the FLAMEFILTER® is also available in the materials Tantalum, Inconel, Copper, etc. when the listed housing materials are used.

Special materials upon request

Type of connection

Pipe thread DIN ISO 228-1DIN

other types of thread 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”.