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Model 2400

June 2019

Instruction Manual

D104470X012

Model 2400 In-line Duct Flame Arrestor

North America 

Only

Figure 1

. In-line Duct Flame Arrestor

Table of Contents

Introduction ............................................................................1
Specifications ........................................................................2
Principle of Operation ............................................................2
Factors Affecting Flame Arrestor Performance ......................2
Installation .............................................................................3
Maintenance ..........................................................................4
Parts Ordering .......................................................................4

!

WARNING

Failure to follow these instructions or to 

properly install and maintain this equipment 

could result in an explosion, fire and/or 

chemical contamination causing property 

damage and personal injury or death.
Enardo detonation flame arrestor must 

be installed, operated and maintained 

in accordance with federal, state and 

local codes, rules and regulations 

and Emerson Process Management 

Regulator Technologies Tulsa, LLC 

(Emerson) instructions.
Failure to correct trouble could result in a 

hazardous condition. Call a qualified service 

person to service the unit. Installation, 

operation and maintenance procedures 

performed by unqualified person may 

result in improper adjustment and unsafe 

operation. Either condition may result in 

equipment damage or personal injury. Only 

a qualified person must install or service the 

detonation flame arrestor.

Product Description

This manual applies to the Model 2400 In-line Duct Flame 

Arrestor which is intended for applications where the 

maximum distance between the most distant system ignition 

source and the connection flange of unprotected (hot) side 

of the flame arrestor are with the limits indicated in the 

installation section of this manual. This product is to be used 

in Gas Group IIA flammable vapor applications where the 

minimum Maximum Experimental Safe Gap (MESG) of the 

stream is 0.035 in. / 0.90 mm or higher.

Product Identification and Marking

The product is provided with product identification 

consisting of a nameplate and an appropriate warning label 

in accordance with ISO 16852:2016. Please review this 

information prior to installing the product.

Construction

The Model 2400 In-line Duct Flame Arrestor consists of a 

housing assembly consisting of 24 in. Sch. 40 nominal pipe 

and plate flanges available in Carbon steel, Stainless steel 

or Hastelloy

®

. The flame element is available in 304, 316 

Stainless steel or Hastelloy

®

. The housing is fitted with 1/2 in. 

threaded pipe couplings which are used for the installation of 

a temperature sensor on the unprotected side of the arrestor. 

A temperature sensor must be used in order for this product 

to comply with ISO 16852 guidelines. Standard construction 

consists of a 10 in. / 254 mm face-to-face dimension.

Introduction

Scope of the Manual

This Instruction Manual provides instructions for installation, 

operation, maintenance and parts ordering information for 

the Model 2400 In-line Duct Flame Arrestor.

Hastelloy

®

 is a mark owned by Haynes International, Inc. 

Summary of Contents for 2400

Page 1: ... where the maximum distance between the most distant system ignition source and the connection flange of unprotected hot side of the flame arrestor are with the limits indicated in the installation section of this manual This product is to be used in Gas Group IIA flammable vapor applications where the minimum Maximum Experimental Safe Gap MESG of the stream is 0 035 in 0 90 mm or higher Product I...

Page 2: ...d to prevent the transmission of a deflagration This product is not intended to prevent the transmission of detonations See Table 1 for maximum distance between ignition source and the flame arrestor The following vapors are not within the scope of this product Vapors with an MESG less than 0 035 in 0 90 mm Explosive mixtures of vapors and gases which tend to self decompose e g acetylene or which ...

Page 3: ...when installing this unit Flow Direction The Model 2400 In line Duct Flame Arrestor is bi directional however the temperature sensor must be located on the unprotected hot side of the arrestor Hastelloy is a mark owned by Haynes International Inc Figure 3 Product Marking Plates Example Nameplate Example Warning Plate 059 Option Example Warning Plate 046 Option Pipe Connections The Model 2400 In li...

Page 4: ...amage the elements and seriously impair the arrestor s performance If the arrestor element cannot be cleaned satisfactorily it must be replaced For best cleaning results a high pressure sprayer with spray wand should be used 1 500 to 3 000 psig 103 to 207 bar to clean the entire element surface The spray nozzle should be held perpendicular to the surface being cleaned to maximize spray media penet...

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