Oxy/Ace question

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I bought some Oxy/Ace tanks off Craigslist (I had everything else already) and I have a question about my acetylene regulator.  The regulator is a CGA-510 but the tank valve doesn't match as you can see.  This tank is pretty good size, from the measurements i'm guessing around 130 cubic feet.  From the research I have done i'm guessing they consider this a commercial tank and that would make it CGA-300 valve.  Is this what I am looking at here?  I measured the threaded portion coming out of the valve and its roughly .820" in diameter, RH thread, and it's 14TPI since it's .500" long with 7 threads.Shot of the regulator and valve...Shot of the tanks.  The O2 is about 56" to the top...Thanks in advanced!Chris Allredwww.UnusualFabrication.com
Reply:All you need is an adapter. Should be less than $10 at you LWS, or you can find it online. I think the one you want is a Western Enterprises 61
Reply:just rememberthe 1/7 rule with that ace tank..
Reply:Originally Posted by welds4dAll you need is an adapter. Should be less than $10 at you LWS, or you can find it online. I think the one you want is a Western Enterprises 61
Reply:its 1/10Miller Xmt 350Lincoln Ln-25Ahp 200xSmith Gas Mixer AR/HTig is my Kung FuThrowing down dimes and weaving aboutInstagram http://instagram.com/[email protected]
Reply:http://www.oshaobserver.com/osha-rel...-requirements/While the old standard recommended a flow rate of 1/7 of the cylinder capacity regardless of the duration of use, the revision has advises a flow rate of 1/10 per hour for intermittent use and 1/15 for continuous use.
Reply:i dont th ink the tanks in the picture are 250 cf and 130 cf, more like half of that. that little ace tank is no good for anything but brazing..maybe a real small cutting tip for a short cut..
Reply:Originally Posted by weldbeadi dont th ink the tanks in the picture are 250 cf and 130 cf, more like half of that. that little ace tank is no good for anything but brazing..maybe a real small cutting tip for a short cut..
Reply:Yes, I have those exact tanks. The Oxy is 250 cu. ft. and the acet. is 125. Perfectly adequate for that cutting tip and any reasonable size welding tip.As Welds4d said, your LWS should have that adapter; just make sure they will fill those tanks. Many folks have had issues trying to get tanks from C/L refilled.JohnA few weldersA lot of hammersA whole lot of C-clamps
Reply:Refilling tanks isn't a problem.  You will have to pay a "retest" or "test" fee from your supplier since they won't have their label.  That fee can range from $15 - $50 depending on the supplier.  Which if you didn't pay much for the bottle to begin with makes them a great buy considering what they cost to buy from the welding supplier.
Reply:Thanks for all the help.  I used the sizes provided on the Praxair website to measure the tanks I have and according to them a 51" tall 9" diameter oxygen tank is 244 cu ft. or a "K".  A 35" tall 8" diameter acetylene tank is 130 cu ft or a "WS/WSL".  Both of my tanks measure roughly what is spec'd on the website.  I have 3 major welding supplys in my town, Praxair, Purity, and Airgas.  These tanks are from Purity so I know I can get them filled.  I paid $200 for the pair from a lady whose husband had recently passed away and she was selling off some of his stuff.  A "0" cutting tip is on the high side of what I will use it for, most of the material I use is around the .250"-.375" size so I will pick up a "00" tip when I pick up the adapter for the ace tank.  So how do I figure out what tips are going to put me in the danger zone of the draw rate?  If I go by the 1/10 rule and my acetylene tank is 130 cu ft I can use 13 cu ft, is that per hour or what?  How do I find out what my tips are drawing?Chris Allredwww.UnusualFabrication.com
Reply:EDIT - I just looked it up and CGA changed their pamphlet on acetylene safety and handling to 1/10 instantaneous and 1/15 average in 2003 and OSHA picked it up by referenc in 2009.  That means no faster than 12 cf instant for a 125 cf acet bottle, and no faster than 9 cf average per hour on a bottle that size I was taught the 1/7 rule and a lot of manufacturers still use it, including Smith.  http://www.smithequipment.com/produc...atalog2010.pdfAnd ESAB http://www.esabna.com/EUWeb/OXY_handbook/589oxy1_21.htmYou have to know the flow rate of your cutting or welding tip to calculate it and you get that from the manufacturer catalogue.  However, a word of warning - these numbers are AVERAGES for a specific setting.  Smith's catalogue says:Consumption (SCFH: cubic feet per hour) figures shown, represent the average volumes of gases consumed when acetylene is added until sooty smoke just disappears from the acetylene flame prior to opening the oxygen valve and adjusting to a neutral flame.That's how I was taught to set my torch flame.  But if you set your flame by running the acetylene till the flame separates from the tip and then back down a bit, you will be running a more than the pubslished number - unsafe.For my Smith torch an MW205 welding tip is the largest I can safely use, drill size 54.  CFH is 6 cf/hour with my 75 cf bottle.  Note that the flow rate jumps dramatically with the next bigger tip - 12 cf/hour (!)  I'd be waaaay over 1/7th and would need a 125 cf bottle minimum.  For practical purposes, I can only weld 1/8" or so.  For cutting, a Smith MC12-1, which is good up to 1/2" or so.As for me, I am strict about the 1/7 the rule.  That's an instantaneous number I won't go above and I set my torch flame conservatively on the largest tips.Hope that helps.Last edited by RodJ; 04-02-2012 at 02:25 PM.
Reply:A quick trip to the LWS and $6 later I had the adapter I need to make the connection...And now everything is hooked up and ready to go...I set the regulators, sparked it up, adjusted the flame, and made a few quick cuts.  Everything worked out great and cut like butter.  The LWS was out of "00" cutting tips so they ordered some more.  That size will be more in the range of material thickness that I work with.  Hopefully I can get something with the tip specs on it so I can do all the math for the draw rates.Chris Allredwww.UnusualFabrication.com
Reply:If you want to know how many cuft in the cylinder.  There is a TW # stamped on the cylinder, that is the weight of the cylinder without the gas.  Weigh the cylinder and then subtract the TW weight.  If it is 10, then you have 147 cuft in the cylinder.  There are 14.7 cuft per # of acetylene gas.   JGSMAW,GMAW,FCAW,GTAW,SAW,PAC/PAW/OFCand Shielding Gases.  There all here. :
Reply:One other thing you should make sure you have is a set of flashback arrestors and check valves. You can get them both built into the same piece or you can get them seperately. We run the Check valves off of the regulator and the fash arrestors are built into the torch. It should be stamped on your torch if it has built in arrestors. According to our Smith rep. The built in arrestors on the torch can gum up and the torch body has to be replaced if that happens. He likes the seperate arrestors that can be replaced by themselves if they ever malfunction. Don't ask me how to check them! We have used the same torch for years with no troubles and this is a school shop where many people use it all day long, every day.