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View Poll Results: do you use flashback arrestors
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Mr Safety says - ALWAYS use flashback arrestors
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76 |
66.09% |
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flashback what - never need those things
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14 |
12.17% |
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I use something else - please explain
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2 |
1.74% |
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only on the fuel - not on the oxygen
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23 |
20.00% |
2013-01-30, 3:17pm
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I like fire....
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Join Date: Jul 24, 2012
Location: Everett Washington
Posts: 132
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do you use flashback arrestors?
do you use flashback arrestors?
I just got my Nortal mega minor
picked up two oxygen tanks
almost ready to burn a little something
I am looking at moving towards small borosilicate
so just wondering - if I need this before i light up.
I know comon sense says - "yes".
so what do you do??
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Ritch
Mega Minor, on tanked oxy
Playing on both sides of the dark side - Boro and Not Boro
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2013-01-30, 3:38pm
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Senior Member
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I do on gas not on my concentrators
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2013-01-30, 3:41pm
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Senior Member
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Join Date: Mar 14, 2012
Location: Bennington, VT
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you'll need them for your propane, and if you are going to run tanked oxy then you'll need one for oxy as well.
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2013-01-30, 4:22pm
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Senior Member
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Join Date: Oct 16, 2012
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Agree, use them on both when using tanked Oxy...
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2013-01-30, 5:14pm
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Loving learning
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Location: Florida
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When I went to buy one, (propane) they sold me "check valves" which they said were cheaper but did the same thing.
Of course maybe they are the same thing & they were just having fun with me.
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2013-01-30, 6:34pm
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Member
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Join Date: Nov 04, 2012
Location: Aiken, SC
Posts: 58
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When I got my Nortel minor torch and regulators, I was told I just needed the arrestors on the propane not the oxygen tank. Now, I'm confused. Do you really need it on the oxygen tank?
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2013-01-30, 6:54pm
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Senior Member
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Location: Kentucky
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There is a thread here somewhere that you should read about someone who actually had a flashback while torching. Let me see if I can find it...
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Mary
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2013-01-30, 6:57pm
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Mary
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2013-01-30, 7:21pm
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Senior Member
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Posts: 198
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I have had one happen on an ox/acetylene torch before. Not fun. The gas line cracked after a Hilo ran over it. Talk about a mad dash to the gas valve. Lesson: don't use torched in an active parking lot.
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2013-01-30, 7:22pm
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Enjoying Life
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Location: Behind the Orange Curtain, CA
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Quote:
Originally Posted by Eileen
When I went to buy one, (propane) they sold me "check valves" which they said were cheaper but did the same thing.
Of course maybe they are the same thing & they were just having fun with me.
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Wrong! Flashback arrestors will stop a backflow of gasses and they will also stop the much more serious flashback ( flame actually travelling back with the gasses). The check valves will only stop a backflow of gasses. If choosing between them, I'd go with flashback arrestors at the torch.
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Dave
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2013-01-30, 7:31pm
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Mary Lockwood
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Join Date: Jun 21, 2005
Location: Boonies
Posts: 5,831
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yes on propane, no on oxy because I use a concentrator
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2013-01-30, 8:18pm
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Loving learning
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Quote:
Originally Posted by Hangs Well
Wrong! Flashback arrestors will stop a backflow of gasses and they will also stop the much more serious flashback ( flame actually travelling back with the gasses). The check valves will only stop a backflow of gasses. If choosing between them, I'd go with flashback arrestors at the torch.
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Thank you Dave, I'll see about finding the flashback, don't want any flame heading back to the propane tank! (I'm on an oxycon)
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2013-01-30, 8:19pm
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Quote:
Originally Posted by Moth
yes on propane, no on oxy because I use a concentrator
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Same for me.
Sue
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2013-01-30, 9:30pm
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Quote:
Originally Posted by Hangs Well
Wrong! Flashback arrestors will stop a backflow of gasses and they will also stop the much more serious flashback ( flame actually travelling back with the gasses). The check valves will only stop a backflow of gasses. If choosing between them, I'd go with flashback arrestors at the torch.
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flashback arrestors are attached at the regulator in case of a hose fire, if they are at the torch and your hose catches fire your tank can still explode.
use an flashback arrestors for both propane and oxy when using tanks.
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Morgan
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#C-151
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2013-01-30, 11:35pm
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Enjoying Life
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Quote:
Originally Posted by Baywinger
flashback arrestors are attached at the regulator in case of a hose fire, if they are at the torch and your hose catches fire your tank can still explode.
use an flashback arrestors for both propane and oxy when using tanks.
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Flashbacks usually occur from a drop in fuel pressure and start at the torch, not from a fire melting your hoses. This is more of an issue for standard welding or premix torches. If you have your flashback arrestors at the regulator you could loose a lot of hose. Here is a link form Victor welding torches. The suggestion is to use flashbacks at the torch.
http://victortechnologies.com/IM_Upl...roducts%20.pdf
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Dave
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2013-01-31, 9:27am
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Lampworkaholic!
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Location: Cornelius, NC - because weather
Posts: 5,158
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I use them both on my tanked propane and on my Regalia. I figured better safe than sorry.
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2013-01-31, 9:49am
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I like fire....
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Join Date: Jul 24, 2012
Location: Everett Washington
Posts: 132
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OK - I will get some flashback arrestors
BUT
at the torch?
or
at the regulator?
which is preferred????
I think at the torch, but then you have so much more length of arrestor and tubing in front of you, does anyone find that to be in the way while working??
at the regulator means no blowing up if the hose would ever catch fire - but you may end up needing a hose more often.
Thoughts???
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Ritch
Mega Minor, on tanked oxy
Playing on both sides of the dark side - Boro and Not Boro
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2013-01-31, 11:11am
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Mary Lockwood
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Join Date: Jun 21, 2005
Location: Boonies
Posts: 5,831
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I've got mine at the regulator where my quick-connect fitting is. I don't care about losing 8 feet of t-hose. I care about the tank blowing up. LOL
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2013-01-31, 12:02pm
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Enjoying Life
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Quote:
Originally Posted by nwmud
OK - I will get some flashback arrestors
BUT
at the torch?
or
at the regulator?
which is preferred????
I think at the torch, but then you have so much more length of arrestor and tubing in front of you, does anyone find that to be in the way while working??
at the regulator means no blowing up if the hose would ever catch fire - but you may end up needing a hose more often.
Thoughts???
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It is really your choice. If you read the link I posted above from Victor Technologies (they make welding equipment) they recommend the torch end.
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Dave
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2013-01-31, 1:10pm
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i didn't think it was possible to run a FBA with an oxycon?
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2013-01-31, 4:22pm
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I like fire....
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Join Date: Jul 24, 2012
Location: Everett Washington
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Quote:
Originally Posted by istandalone24/7
i didn't think it was possible to run a FBA with an oxycon?
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what is an FBA??
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Ritch
Mega Minor, on tanked oxy
Playing on both sides of the dark side - Boro and Not Boro
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2013-01-31, 4:31pm
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Now part of the Dark Side
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Join Date: Jul 02, 2010
Location: North Central PA
Posts: 966
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FBA=Flash Back Arrestor
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Roy
Hot glass does not crack.
Unless it is glowing and drippy, hot glass looks like cold glass.
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2013-01-31, 9:20pm
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I took commercial welding classes and was taught at the regulator
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Morgan
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#C-151
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2013-01-31, 9:26pm
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of course I have flashback arrestors at my regulators and qd's with check valves at my torch 
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Morgan
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#C-151
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2013-01-31, 11:21pm
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Enjoying Life
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Quote:
Originally Posted by Baywinger
I took commercial welding classes and was taught at the regulator
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And I was taught torch. I think your regulator and check valve at torch is also an excelent setup. What we do agree on is that you SHOULD use flashback arrestors.
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Dave
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2013-02-01, 1:06pm
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Quote:
Originally Posted by Hangs Well
And I was taught torch. I think your regulator and check valve at torch is also an excelent setup. What we do agree on is that you SHOULD use flashback arrestors. |
that we do one must avoid turning your studio into a fire bomb!
this is similar to the discussion on which to turn off first oxy or fuel lol
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Morgan
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#C-151
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2013-02-01, 10:54pm
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Alaska Boro
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On the oxygen concentrator no.
On the high pressure side of the natural gas line, yes.
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2013-02-02, 10:33am
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Why dont folks on the concentrators? Know it wont Blow but i cant imagine fire getting to them would be good....
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2013-02-02, 10:41am
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The issue is when a tank goes empty, the flame on a premix torch, can go right down into the torch and then the pressure, from the non empty tank, can push the flame front back the hose and into the empty tank.
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Roy
Hot glass does not crack.
Unless it is glowing and drippy, hot glass looks like cold glass.
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2013-02-08, 5:23pm
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I like fire....
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Join Date: Jul 24, 2012
Location: Everett Washington
Posts: 132
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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 
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Ritch
Mega Minor, on tanked oxy
Playing on both sides of the dark side - Boro and Not Boro
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