FA-CN-IIA1
In-Line Deflagration Flame Arresterfor biogas, sewage gas and landfill gas, concentric design, bidirectional
Features
Extended Application Range
for elevated operating temperatures and pressures
Eccentric Design
eases installation close to floors and walls
Spare Parts
cost-effective flame arrester / 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
Deflagration
Explosion propagating at subsonic velocity (EN 1127-1:1997).
and
endurance burning
Endurance burning
Stabilized burning for an unlimited time.
-proof PROTEGO® FA-CN-IIA1
in-line flame arrester
In-line flame arrester
An in-line flame arrester is a flame arrester, which has pipe connectors on either side of the flame arrester unit.
was specially developed for bio-, sewage- and landfill-gas applications. With this
device
Device
A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow.
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
Atmospheric conditions
Atmospheric conditions are pressures from 80 kPa till 110 kPa and
temperatures from -20°C up to +60°C.
, 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
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
In-line deflagration flame arrester
A deflagration flame arrester is designed to prevent the transmission of a deflagration. An in-line deflagration flame arrester is equipped with a pipe connection on both sides.
is symmetrical and offers bidirectional flame transmission protection. The device consists of a
housing
Housing
A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content.
(1) with an easy access cover (3) and the
PROTEGO® flame arrester unit
PROTEGO® flame arrester unit
The PROTEGO® flame arrester unit is the main component of a flame arrester. It prevents flame propagation.
(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
FLAMEFILTER® casing
Enclosure for FLAMEFILTER® including insert rings.
. 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
Explosion
Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously.
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
Operating temperature
Temperature reached when the equipment is operating under design conditions.
of +60°C / 140°F and an absolute
operating pressure
Operating pressure
Operating pressure is the pressure existing at normal operating conditions within the system being protected.
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
Product
Includes equipment, protective systems, devices, components and combinations of these.
Data and Features
Dimensions
To select the nominal size Nominal size The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (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
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:Basic in-line deflagration flame arresterFA-CN - –
In-line deflagration flame arrester with
integrated temperature sensor
Integrated temperature sensor
Temperature sensor integrated into the flame arrester, as specified by the manufacturer of the flame arrester, in order to provide a signal suitable to activate counter measures.
* as additional protection against short-time burning from one sideFA-CN - T
In-line deflagration flame arrester with two integrated temperature sensors* for additional protection against short-time burning from both sidesFA-CN - TB
Additional special devices available upon request
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)
Material selection
| Design | A | B | |
| Housing | Steel | Stainless Steel | |
| Cover | Steel | Stainless Steel | |
| Gasket | WS 3822 * | PTFE | |
| Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. | Stainless Steel | Stainless Steel |
* for devices exposed to temperatures above 150°C / 302°F (T150), gaskets made of PTFE.
Special materials 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”.
Applications