 Selecting The Right Product
End of Line Deflagration Flame Arrestors
Elmac Technologies® can supply different types of end of line deflagration arrestors, suitable for a wide variety of industries and applications. AVA, FE-EXH, and AVC arrestors have replaceable elements and are suitable for IIA, IIB3, and IIC gas groups respectively. SV and SVE arrestors are small, light-duty arrestors with fixed elements, whilst FE-IE arrestors are for use with pressure and/or vacuum relief valves.
The tables below show which products are suitable for which gas groups, as well as the connection sizes available. Follow the product links for detailed product information for each series.
 End-of-Line Deflagration Arrestors
End-of-line deflagration arrestors are designed to be installed at the end of a pipeline or exit vent from a vessel, where the ignition source is external, to provide protection against atmospheric deflagration.
Table 1a. End-of-Line Arrestor Gas Group Suitability
| Gas Group | I | IIA | IIB3 | IIB | IIC |
|---|
| AVA | | | - | - | - |
|---|
| FE-EXH | | | | - | - |
|---|
| AVC | | | | | |
|---|
| SV | | | | - | - |
|---|
| SVE | | | | - | - |
|---|
Table 1b. End-of-Line Arrestor Size Ranges
| Nominal Bore (mm) | 10 | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
|---|
| AVA | - | | | | | | | | | | | | | | | | |
|---|
| FE-EXH | - | | | | | | | | | | | | | | | | |
|---|
| AVC | - | - | - | | - | | | | | | | | - | - | - | - | - |
|---|
| SV | - | | | | - | - | | - | - | - | - | - | - | - | - | - | - |
|---|
| SVE | | | | | - | | | - | - | - | - | - | - | - | - | - | - |
|---|
 End of Line Deflagration Arrestor for use with Pressure/Vacuum Relief Valves
FE-IE series end-of-line deflagration arrestors are designed to be used in conjunction with pressure/vacuum relief valves, to prevent propagation of flames in gas or vapour mixtures. FE-IE arrestors are specifically designed to be located below the inlet of a pressure/vacuum relief valve, thereby providing an extra layer of tank protection.
Table 2a. End-of-Line Arrestor for PRV's - Gas Group Suitability
| Gas Group | I | IIA | IIB3 | IIB | IIC |
|---|
| FE-IE | | | | - | - |
|---|
Table 2b. End-of-Line Arrestor for PRV's - Size Ranges
| Nominal Bore (mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
|---|
| FE-IE | | | | | | | | | | | | | | |
|---|
Still not sure?
Our Customer Services team is just a phone call away.
If you are still not sure which flame arrestor product you need, or have a query about specific options or requirements, or would like some more advice, please do not hesitate to get in touch with our Customer Services team. Details are shown on the left of this page.
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