FA-CN-IIA1

FA-CN-IIA1

In-Line Deflagration Flame Arrester

for biogas, sewage gas and landfill gas, concentric design, bidirectional

Function and Description

The deflagration and endurance burning-proof PROTEGO® FA-CN-IIA1 in-lineflame arrester was specially developed for bio-, sewage- and landfill-gas applications. With this deviceit 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 athmospheric conditions, without temperature monitoring. The PROTEGO® FA-CN-IIA1 deflagration flame arrester is a compact design utilizing an easy access cover for easy maintainability. The FLAMEFILTER® unit can be removed and cleaned within moments withouthaving to disassemble the pipe. When installing the deflagration flame arrester, make sure that the distance between potential ignitionsources 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 accesscover (3) and thePROTEGO® 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® cage. The number of FLAMEFILTER® discs and their gap size depend on the arrester‘s conditions of use.

By indicating the operating parameterssuch as temperature, pressure, explosion group and the composition of the fluid, the optimum deflagration flamearrester 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).

PROTEGO® FA-CN devices for substances of explosion groups IIA, IIB3 and IIC (NEC groups D, C, and B) are shown on sepa- rate pages.

The standard design can be used up to an operating temperature of +60 C / 140 F and an absolute operating pressureup 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.

Type-approved in accordance with ATEX Directive and EN ISO 16852 as well as other international standards.

Features and Advantages

  • state of the art design for bio-, sewage- and landfill gas applications
  • design available for elevated operating temperatures and pressures
  • compact design with easy access cover
  • easy maintenance without disassembling of the pipeline
  • modular flame arrester unit enables individual FLAMEFILTER® to be replaced and cleaned
  • bidirectional flame transmission proof design
  • provides protection against deflagrations and endurance burning for explosion group IIA1– methane (former designation Expl.gr. I)
  • lowest pressure drop results in low operating and lifecycle costs
  • modular design reduces spare parts cost

Dimensions

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

DN40 / 1½" 50 / 2" 65 / 2½"80 / 3" 100 / 4" 125 / 5" 150 / 6" 200 / 8" 250 / 10" 300 / 12"
a210 / 8.27215 / 8.46235 / 9.25240 / 9.45265 / 10.43305 / 12.01310 / 12.20300 / 11.81320 / 12.60350 / 13.78
b105 / 4.13105 / 4.13105 / 4.13132 / 5.2150 / 5.91197 / 7.75197 / 7.75220 / 8.66260 / 10.24295 / 11.61
c200 / 7.87200 / 7.87260 / 10.24260 / 10.24308 / 12.13415 / 16.34415 / 16.34446 / 17.56520 / 20.47600 / 23.62
d130 / 5.12130 / 5.12185 / 7.28185 / 7.28220 / 8.66310 / 12.20310 / 12.20355 / 13.98420 / 16.54490 / 19.29
DN40 / 1½" 50 / 2" 65 / 2½"80 / 3" 100 / 4" 125 / 5" 150 / 6" 200 / 8" 250 / 10" 300 / 12"
a210 / 8.27215 / 8.46235 / 9.25240 / 9.45265 / 10.43305 / 12.01310 / 12.20300 / 11.81320 / 12.60350 / 13.78
b105 / 4.13105 / 4.13105 / 4.13132 / 5.2150 / 5.91197 / 7.75197 / 7.75220 / 8.66260 / 10.24295 / 11.61
c200 / 7.87200 / 7.87260 / 10.24260 / 10.24308 / 12.13415 / 16.34415 / 16.34446 / 17.56520 / 20.47600 / 23.62
d130 / 5.12130 / 5.12185 / 7.28185 / 7.28220 / 8.66310 / 12.20310 / 12.20355 / 13.98420 / 16.54490 / 19.29

Dimensions in mm / inches

FA-CN-IIA1

Connection to the protected side (only for type FA-CN-T-....)

Material selection

Design A B
HousingSteelStainless Steel
CoverSteelStainless Steel
GasketWS 3822 *PTFE
Flame arrester unitStainless SteelStainless Steel
Design A B
HousingSteelStainless Steel
CoverSteelStainless Steel
GasketWS 3822 *PTFE
Flame arrester unitStainless SteelStainless Steel

* for devices exposed to temperatures above 150°C / 302°F (T150), gaskets made of PTFE.Special materials upon request

FA-CN-IIA1

Connection to the protected side (only for type FA-CN-T-....)

Selection of explosion group

MESGExpl. Gr. (IEC / CEN)
> 1.14 mmIIA1 (I)
MESGExpl. Gr. (IEC / CEN)
> 1.14 mmIIA1 (I)

Special approvals upon request

Selection of max. operating pressure

DN40 / 1½"50 / 2"65 / 2½"80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
Pmax2.0 / 29.02.0 / 29.01,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.2
Pmax2,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.3
Pmax4,5 / 65.34,5 / 65.34,5 / 65.34,5 / 65.34,5 / 65.34,5 / 65.34,5 / 65.3
Pmax5 / 72.55 / 72.5
DN40 / 1½"50 / 2"65 / 2½"80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"
Pmax2.0 / 29.02.0 / 29.01,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.2
Pmax2,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.32,5 / 36.3
Pmax4,5 / 65.34,5 / 65.34,5 / 65.34,5 / 65.34,5 / 65.34,5 / 65.34,5 / 65.3
Pmax5 / 72.55 / 72.5

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

higher operating temperatures upon request

Flange connection type

EN 1092-1; Form B1
ASME B16.5; 150 lbs RFSF
EN 1092-1; Form B1
ASME B16.5; 150 lbs RFSF

other connections upon request

Design Types and Specifications

There are three different designs:

Basic in-line deflagration flame arrester

FA-CN - –

In-line deflagration flame arrester with integrated temperature sensor* as additional protection against short-time burning from one side

FA-CN - T

In-line deflagration flame arrester with two integrated temperature sensors* for additional protection against short-time burning from both sides

FA-CN - TB

Basic in-line deflagration flame arrester

FA-CN - –

In-line deflagration flame arrester with integrated temperature sensor* as additional protection against short-time burning from one side

FA-CN - T

In-line deflagration flame arrester with two integrated temperature sensors* for additional protection against short-time burning from both sides

FA-CN - TB

Additional special devices available upon request
*Resistance thermometer for device group II, category (1) 2 (GII cat. (1) 2)

FA-CN-IIA1

Connection to the protected side (only for type FA-CN-T-....)

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). Conversion to other densities and temperatures refer to Vol. 1: “Technical Fundamentals”.

FA-CN-IIA1

Connection to the protected side (only for type FA-CN-T-....)

FA-CN-IIA1

Connection to the protected side (only for type FA-CN-T-....)