FA-CN-IIA, IIB3

In-Line Deflagration Flame Arrester concentric design, bi-directional

Features

Eccentric Design
eases installation close to floors and walls
Modular Design
allows replacement and cleaning of single FLAMEFILTER®
Bi-Directional Flame Transmission
proof design
Spare Parts
cost-effective spare parts
Provides Safety
protects against deflagrations for all explosion groups IIA, IIB3 and IIC (NEC groups D, C and B)
Extended Application Range
for elevated operating temperatures and pressures
Function and Description

Compact and Maintenance-Friendly Design

The PROTEGO® FA-CN 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 a compact design utilizing an easy access cover for easy maintenance Maintenance Combination of all technical and administrative actions, including supervision actions, intended to maintain or restore a unit in working order. . 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. can easily be removed and cleaned in just a few simple steps without having to disassemble the pipe. When installing the deflagration Deflagration Explosion propagating at subsonic velocity (EN 1127-1:1997). flame arrester Flame arrester Device fitted to the opening of an enclosure, or to the connecting pipe work of a system of enclosures, and whose intended function is to allow flow but prevent the transmission of a flame. , make sure that the distance between potential ignition sources and the location of the installed 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. 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.

Main component - PROTEGO® flame arrester

The deflagration flame arrester is symmetrical and offers bi-directional flame transmission protection. The device consists of the 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 (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 device’s intended use.

For Explosion groups IIA to IIC

Specifying the operating conditions, such as the 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, 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 Operating temperature Temperature reached when the equipment is operating under design conditions. of up to +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 1.1 bar / 15.9 psi. Devices with special approval for higher pressures (see table 3) and higher temperatures are available upon request.

Many Individual Certifications

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 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), 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

Dimensions in mm / inches

Selection of explosion group

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

Special approvals upon request

Selection of max. operating pressure

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®

Specification of max. operating temperature

≤ 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 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 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

DesignAB
HousingSteelStainless Steel
CoverSteelStainless Steel
GasketPTFEPTFE
Flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. Stainless SteelStainless Steel

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

Floating-Roof Storage Tanks

Processing Facilities

Vapor Combustion Systems

Contact CSR Department 

If you have any questions, feedback, or additional input, our team of experts will be glad to support you.

Picture of Mrs. Auris-Nadine Hillen
Mrs. Auris-Nadine Hillen

CSR Department

+49 (0)5307 809 108