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View Poll Results: do you use flashback arrestors
Mr Safety says - ALWAYS use flashback arrestors 76 66.09%
flashback what - never need those things 14 12.17%
I use something else - please explain 2 1.74%
only on the fuel - not on the oxygen 23 20.00%
Voters: 115. You may not vote on this poll

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  #31  
Old 2013-02-09, 6:07am
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Dragonharper Dragonharper is offline
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From Western Enterprises:
http://www.youtube.com/watch?v=CHCMFnNCJJo

They recommend FBA's at BOTH the torch and the regulator.
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  #32  
Old 2013-02-09, 8:50am
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Well I just ordered a set of FBA's not sure why I never had them before I think I was told did not need them for my surface mix torch way back when. Reading these treads wow and that video. I got the at the regulator type.

Thanks for all the great information.
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  #33  
Old 2013-02-20, 10:25am
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Chances of flashback are much lower on a surface mix than a premix, but it is not impossible. Not impossible to me means that I still need flashback arrestors. LOL Good choice, John.
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  #34  
Old 2013-02-20, 11:14am
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Quote:
Originally Posted by Moth View Post
Chances of flashback are much lower on a surface mix than a premix, but it is not impossible. Not impossible to me means that I still need flashback arrestors. LOL Good choice, John.
Well put. Cheap insurance.
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  #35  
Old 2013-03-11, 9:46pm
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Quote:
Originally Posted by Dragonharper View Post
From Western Enterprises:
http://www.youtube.com/watch?v=CHCMFnNCJJo

They recommend FBA's at BOTH the torch and the regulator.
I was always told there was an issue with flow having them a both ends, but it works fine. Thanks Roy! Learn something new everyday.
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  #36  
Old 2013-03-13, 11:48am
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Quote:
Originally Posted by untamedrose View Post
Why dont folks on the concentrators? Know it wont Blow but i cant imagine fire getting to them would be good....
There is a minimum amount of pressure required to drive the gas through the FBA. Concentrators don't produce the additional pressure and you won't get oxygen flowing through one. Additionally, unless you have a reserve tank (another matter) there isn't a large store of oxygen in a concentrator to contribute to a big fire.

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  #37  
Old 2013-03-28, 12:26am
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Hi everyone,

I have Smith quick connects that are also supposed to operate as flashback arrestors.

I got them for convenience so I could disconnect my hoses easily . . . but figured they would add a bit of safety also.

I was told that I didn't actually need arrestors as I've a Lynx which is a surface mix. Is this right?
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  #38  
Old 2013-03-29, 9:56am
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Quote:
Originally Posted by Bett View Post
Hi everyone,

I have Smith quick connects that are also supposed to operate as flashback arrestors.

I got them for convenience so I could disconnect my hoses easily . . . but figured they would add a bit of safety also.

I was told that I didn't actually need arrestors as I've a Lynx which is a surface mix. Is this right?
I know of no quick disconnects that actually have FB arrestors, only check valves. What your were told about the Lynx is true only if you assume all is working properly. As soon as you add in the possibility of an internal leak, which does happen, then it is BS. Need them? Guess it is based on what you are planning for. Best case or worst case.
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  #39  
Old 2013-05-30, 2:56pm
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http://www.tesuco.com.au/products/ga...ouplers/inline
click on the heading for "flashback arrestors" and you will find combined flashback and quick connect
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Last edited by castaway; 2013-05-30 at 2:59pm.
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  #40  
Old 2013-05-30, 3:54pm
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Quote:
Originally Posted by castaway View Post
http://www.tesuco.com.au/products/ga...ouplers/inline
click on the heading for "flashback arrestors" and you will find combined flashback and quick connect
None of those have integral FBs.
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  #41  
Old 2013-05-30, 5:11pm
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You need to look a little harder....
model numbers: FRQD4D, FRSFQD4D, FRSoQD4D... and more are integral flashback quick couplers.
Cheers, B
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  #42  
Old 2013-05-30, 5:48pm
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You might also look at and read this.
http://science.wonderhowto.com/inspi...sieve-0120507/

cheers.
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  #43  
Old 2013-06-25, 11:11pm
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Quote:
Originally Posted by nwmud View Post
well I ordered flashback arrestors today. I got the regulator style. I figure a fire is unlikely and the main reason for these are to save your life. so - if they are ever needed - I figure I can replace the hose.
I got these from Ebay - buy me now price, under $20 with shipping
Very glad to know that you will be using them! Safety first!
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  #44  
Old 2015-06-02, 11:28am
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Flashback arrestors are a must have for any torch. If your oxy tank goes empty it may suck your flame into the torch, even on surface mix torches.
I use a foot peddle to control the outer fire on my Mirage so I have the FBA's at the regs because I have hose near the ground, about 1 inch off the ground. If I drop a large piece or marble it could burn the through the hose. FBA's at the torch would do nothing to stop the flame from traveling to the tanks.
I also use the all in one FBA's/QD's from Sundance on two of my torches and a combination of standard FBA's coupled with QD's on another torch.
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  #45  
Old 2019-08-03, 8:27am
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I use natural gas with low pressure with my GTT Scorpion. I had a flashback arrestor on the line to start, but the low pressure gas couldn't get through the arrestor. I use two oxycons for oxygen. That said, I have arrestors for both fuel and oxy, I just can't use them with my current setup. Safety first!
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Last edited by AuntD; 2019-08-03 at 8:41am.
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  #46  
Old 2019-08-05, 12:02pm
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BFA'S are filled with metal find like a brillo pad. During a back flash the metal starts to burn and starves the fire of oxygen. The hose will still be hot. However, T12 hose is designed with that in mind. Figure out what caused the back flash, take a deep breath, replace the arrestor, and keep on trucking.
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