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FA-CN-IIA, IIB3

In-Line Deflagration Flame Arrester concentric design, bidirectional

  • 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
  • bi-directional flame transmission proof design
  • provides protection against deflagrations for group IIA and IIB3 vapours (NEC group D and C)
  • lowest pressure drop results in low operating and lifecycle costs
  • modular design reduces spare parts cost

Función y Descripción

The PROTEGO® FA-CN in-line deflagration flame arrester is a compact design utilizing an easy access cover for easy maintenance. The PROTEGO® flame arrester unit can easily be removed and cleaned in just a few simple steps 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. According to EN ISO 16852, this device is approved for a (L/D)max ratio of 50.

The deflagration flame arrester is symmetrical and offers bi-directional flame transmission protection. The device consists of the 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 FLAMEFILTE® discs and their gap size depend on the device’s intended use.

Specifying the operating conditions, such as the temperature, pressure, explosion group, and the composition of the fluid, enables PROTEGO® to select the best deflagration flame arrester for your application. This version of PROTEG® FA-CN-IIA and IIB3 flame arrester protects against deflagrations of fuel/air mixtures of explosion groups IIA and IIB 3 (NEC D and C {MESG ≥0.65 mm}). PROTEG® FA-CN devices for substances of explosion groups IIA1 and IIC (NEC group B) are shown on separate pages.

The standard design can be used with an operating temperature of up to +60°C / 140°F and an absolute operating pressure up to 1.1 bar / 15.9 psi. Devices with special approval for higher pressures (see table 3) and higher temperatures are available upon request.

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

Dimensiones

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

DN25 / 1"32 / 1¼“40 / 1½“50 / 2"65 / 2½“80 / 3"100 / 4"125 / 5"150 / 6"200250300
a200 / 7.87200 / 7.87210 / 8.27215 / 8.46235 / 9.25240 / 9.45265 / 10.43305 / 12.01310 / 12.20300 / 11.81320 / 12.60350 / 13.78
b92 / 3.6292 / 3.62105 / 4.13105 / 4.13132 / 5.2132 / 5.2150 / 5.91197 / 7.75197 / 7.75220 / 8.66260 / 10.24295 / 11.61
c175 / 6.89175 / 6.89200 / 7.87200 / 7.87260 / 10.24260 / 10.24308 / 12.13415 / 16.34415 / 16.34446 / 17.56520 / 20.47600 / 23.62
d105 / 4.13105 / 4.13130 / 5.12130 / 5.12185 / 7.28185 / 7.28220 / 8.66310 / 12.20310 / 12.20355 / 13.98420 / 16.54490 / 19.29
Dimensiones en mm / pulgadas

Selección de materiales

DesignAB
HousingSteelStainless Steel
CoverSteelStainless Steel
GasketPTFEPTFE
Flame arrester unitStainless SteelStainless Steel
Special materials upon request

Selección del grupo de explosión

MESGExpl. Gr. (IEC / CEN)Gas Group (NEC)
> 0,90 mmIIAD
≥ 0,65 mmIIB3C
Special approvals upon request

Selección de la máxima presión de operación

Expl. Gr.DN25 / 1" 32 / ¼"40 / 1½"50 / 2"65 / 2½"80 / 3"100 / 4"125 / 5"150 / 6"200 / 8"250 / 10"300 / 12"n
IIAPmax1,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,5 / 21.81,5 / 21.81,5 / 21.81,3 / 18.91,3 / 18.91,3 / 18.93
IIB3Pmax1,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.21,6 / 23.23
P = maximum allowable operating pressure in bar / psi absolute, higher operating pressure upon request
n = number of FLAMEFILTER®

Especificación de la máx. temperatura de operación

≤ 60°C / 140°FTmaximum allowable operating temperature in °C
-Designation
higher operating temperatures upon request

Tipo de bridas de conexión

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.
other connections upon request

Modelo y especificación

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

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

Diagrama de flujo volumétrico

Los diagramas de flujo volumétrico han sido determinados con un banco de pruebas de caudal calibrado y certifi - cado por TÜV. El flujo volumétrico V. en [m³/h] y el CFH se refi eren a las condiciones estándar de referencia de aire según ISO 6358 (20°C, 1bar). La conversión a otras densidades y temperaturas están referidas en el Vol. 1: “Fundamentos Técnicos”.