Deflagration Flame Arresters are fire safety devices used to protect stored or process media from deflagrations. A deflagration flame arrester can be used on the top of a tank in certain conditions, as an in-line safety device where combustible gases are transported through low pressure pipe lines.

1. FLAME ARRESTER APPLICATION QUESTIONNAIRE
Definitions: Run-Up Length (L): pipe length on the unprotected side of the flame arrester
(see diagram - tested with straight pipe)
Run-Up Length Ratio (L/D): run-up length divided by pipe diameter
The information below is required in order for us to help you choose the appropriate flame
arrester model for your application.NEC Methane D C B A
IEC IIA1 IIA IIB1 IIB2 IIB3 IIB IIC
Pre-Ignition Pressure
Pre-Ignition Temperature
Maximum Pressure Drop
Required Flow
Max Allow Working Pressure
Run-Up Length (L)
Flange Size (D)
L / D
:
OMER:
Gas Group (circle one)
L
Groth in-line deflagration flame arresters must be installed at or within 10 pipe
diameters of the source of ignition and are only approved for gas groups IIA1 /
Methane, pre-ignition pressures at or below 15.7 psia, and pre-ignition
temperatures at or below 140°F. Groth end-of-line deflagration flame arresters
must be installed at or within 10 pipe diameters of the end of a vent pipe and are
only approved for gas groups IIA / D, pre-ignition pressure at or below 14.7 psia
(atmospheric), and pre-ignition temperatures at or below 140°F.
Orientation (circle one)
HorizontalVertical
Location (circle one)
In-Line End-of-Line
10/5/2011
PROCESSINSTALLATION
Gas Group (choose one): NEC IEC
q METHANE q IIA1
q D q IIA
q C q IIB3
Operational Pressure ________________________
Operational Temperature ________________________
Maximum Pressure Drop ________________________
Required Flow ________________________
Run-Up Length (L) ________________________
Flange Size (D) ________________________
Run-Up Length Ratio (L/D) ________________________
Orientation (choose one): qVertical qHorizontal
Mounting (choose one): qIn-Line qEnd-of-Line
CUSTOMER:
FOR ATEX APPLICATIONS: refer to ISO 16852, Section 7.4 Limits for use, for more information on the application limits of flame arresters.
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Continental Disc Corporation reserves the right to alter the information in this publication without notice. // © 2012 Groth Corporation
Reproduction without written permission is prohibited.
LIT1083 // 0812
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