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How long does a tank of pure argon last

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  • How long does a tank of pure argon last

    I got my dynast 200dx in about a week ago and have done a fair bit of welding with it I usually run about 13 cfm. I weld for a hobby and the cylinder is 7" in diameter and 3and a half feet tall, not sure of the exact volume. Anyway when filled it had 2000 psi in it and now I have about 1250 in it. I weld for hobby but have done a fair bit of welding latly becasue I wanted to use my dynasty. I just wanted your thoughts and opinions on this.

    Thanks

  • #2
    Sounds like you have an 80cf (cubic foot) cylinder. When I got my Dynasty, that was the size I bought because it seemed to work fine for my MIG welder. After I went throught the tank in about a day or two just building a cart, I upgraded to a 120cf (pretty sure that's the size) cylinder. It's easy enought to move by yourself (not that I'd like to move it everyday) and cost about $5 more to fill than the 80cf tank. It will still be filled to 2000psi, but will last a lot longer.

    I also weld for hobby applications and I don't have any problems with how often it needs to be refilled, and it still fits in the front seat of my car.
    -SPiNNeR-

    Hobart 135
    Oxy-Acet w/ Victor torch
    Dynasty 200 DX

    Comment


    • #3
      The tank your describing sounds like an 80 CF. at 13CFH it should last 6 hours of running time. Now running time includes the preflow and postflow times. I run a bit higher flow than you are and I can get a weekend of welding out of one if I have any fitting to do along the way.

      Good luck,

      Comment


      • #4
        Originally posted by TheRealSpinner
        Sounds like you have an 80cf (cubic foot) cylinder. When I got my Dynasty, that was the size I bought because it seemed to work fine for my MIG welder. After I went throught the tank in about a day or two just building a cart, I upgraded to a 120cf (pretty sure that's the size) cylinder. It's easy enought to move by yourself (not that I'd like to move it everyday) and cost about $5 more to fill than the 80cf tank. It will still be filled to 2000psi, but will last a lot longer.

        I also weld for hobby applications and I don't have any problems with how often it needs to be refilled, and it still fits in the front seat of my car.
        I did the same thing. It worked out real good though becouse now I run off the 120 untill its empty and put the 80 on untill I get the 120 filld. Keeps from haveing to stop to go get gas on a sunday afternoon. ???
        To all who contribute to this board.
        My sincere thanks , Pete.

        Pureox OA
        Westinghouse 300 amp AC stick
        Miller Syncrowave 250
        Hexacon 250 watt solder iron

        Comment


        • #5
          Thanks guys I wasn;t sure how long that cylinder lasts, I'm definatly going to upgrade to a larger cylinder

          Comment


          • #6
            Originally posted by burninbriar
            I did the same thing. It worked out real good though becouse now I run off the 120 untill its empty and put the 80 on untill I get the 120 filld. Keeps from haveing to stop to go get gas on a sunday afternoon. ???
            I actually returned the 80cf tank and bought the 120cf. Than I bought a 40cf tank for very easy protability. I don't really ever take it anywhere (like I thought I would), but I was also worried about running out between saturday after 3pm and monday morning.
            -SPiNNeR-

            Hobart 135
            Oxy-Acet w/ Victor torch
            Dynasty 200 DX

            Comment


            • #7
              3faze,

              Look on the neck ring. The tank volume will be stamped there somewhere. Divide that number by the cubic feet per hour you set your regulator to. The result is how many hours you can run on it. Trust me, it ain't empty 'till it's EMPTY!

              Hank
              ...from the Gadget Garage
              Millermatic 210 w/3035, BWE
              Handler 210 w/DP3035
              TA185TSW
              Victor O/A "J" series, SuperRange

              Comment


              • #8
                Does 98/2 end up being lower pressure than regular c25 or straight argon?

                Twin City Oxygen gave me a 124 that's only reading 1500psi and I know the gauge is good cause it read 2200 on the full 150 of argon. Even my 80cf tanks are filled to 2200 on c25. What gives?
                Syncrowave 250DX
                Invison 354MP
                XR Control and 30A

                Airco MED20 feeder
                Thermal Dynamics Cutmaster 81
                Smith O/A rig
                And more machinery than you can shake a 7018 rod at

                Comment


                • #9
                  You got short sticked....

                  Having had this happen a few times, I get my suppler to "gauge" the bottle when I pic it up. The guys on the dock know me and do it when they get the order from the front desk. They treat me well and I usually will bring them a cake or pizza on occassion to thank them. I like the service and say "thank you" from time time. Good prices and good service combined are are hard to find sometimes.

                  Frank
                  XMT300( yes it still works),Hobart Heafty CC/CV, MM175, Airco HF box, Profax spool gun, Bobcat 225, Victor and Smith torches. Reserrected MM130 and Thunderbolt (Katrina flood throwaways) ,

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                  • #10
                    Hey Jim you only got a tank 3/4 full should of been 2000-2200 psi

                    Comment


                    • #11
                      I have got 7 years on mine, maybe i should use it more. ...Bob
                      Bob Wright

                      Spool Gun conversion. How To Do It. Below.
                      http://www.millerwelds.com/resources...php?albumid=48

                      Comment


                      • #12
                        Fill pressures can vary a lot. It depends on how your vendor fills tanks. If they have a gas plant, and are generating their own gases, you can expect "full" bottles - filled to whatever the DOT stamp is.

                        But, and this happens at a lot of mom-'n-pop small shops, they fill from a csacade system, you will only get the highets pressure left in the cascaded cylinders when your tank is filled. Then, they should be running through a flowmeter to know what to charge you.

                        Hank
                        ...from the Gadget Garage
                        Millermatic 210 w/3035, BWE
                        Handler 210 w/DP3035
                        TA185TSW
                        Victor O/A "J" series, SuperRange

                        Comment


                        • #13
                          I thought it was low, just figured I'd double check before making a stink.

                          This place has a nasty habit of increasing charges 50% from when they quote you to the time they stick an invoice in front of you. They quoted me on an 80cf of argon when I told them I had a 150, then wanted $20 than I had been paying at my other supplier, who turns the bottle around within hours of getting it (these guys took over night). I had informed them I was not coming back, because it was taking me 50 mins to get out of there with something even remotely resembling the quoted prices. 3 times. No more. They also have a mysterious charge for 19 bucks (not a big deal, money wise) but where did it come from? I dropped this tank off on dec 27, I picked it up from being hydro'd, revalved, and filled on the 17th of January (or there abouts), and they billed my credit card 19 bucks on the 3rd. I asked them what it was for when I picked up the tank and they had no record of the charge - their advice - call my card co and dispute it. They wouldn't look at their visa records and reverse it, but they want my bank to determine it was erroneous instead.

                          When I get a free couple hours, I'll go back and let them know not only was I unhappy dealing with them, but they over charged my light fill. The gas was like 25 bucks. Big deal. I spent 65 at a new shop yesterday (new to me, he's been around for over 35 years), and spent 20 there last week. Will probably spend another 20 today, and he'll be getting my 250 for my 330cf argon bottle when I buy it. I buy lots of welding supplies. It's not a lot of money in the grand scheme, but it's money not going to them.

                          Anyone in Minneapolis should check out Metro Welding Supply on central ave in columbia heights. Bob is the owner and about as honest as you can get. His prices will drop your jaw, and then he cuts a deal on top of that.
                          Syncrowave 250DX
                          Invison 354MP
                          XR Control and 30A

                          Airco MED20 feeder
                          Thermal Dynamics Cutmaster 81
                          Smith O/A rig
                          And more machinery than you can shake a 7018 rod at

                          Comment


                          • #14
                            Originally posted by hankj
                            Fill pressures can vary a lot. It depends on how your vendor fills tanks. If they have a gas plant, and are generating their own gases, you can expect "full" bottles - filled to whatever the DOT stamp is.

                            But, and this happens at a lot of mom-'n-pop small shops, they fill from a csacade system, you will only get the highets pressure left in the cascaded cylinders when your tank is filled. Then, they should be running through a flowmeter to know what to charge you.

                            Hank
                            This happened to me on my last fillup, I didn't really pay it much attention at the time but I remember when I put my guage on it read about 1500 and I thought it seemed kind of low. I have worked around cascade systems when I was doing hasmat work but it never dawned on me that they would be useing a cascade to fill bottles. Good info to know.
                            To all who contribute to this board.
                            My sincere thanks , Pete.

                            Pureox OA
                            Westinghouse 300 amp AC stick
                            Miller Syncrowave 250
                            Hexacon 250 watt solder iron

                            Comment


                            • #15
                              Originally posted by aametalmaster
                              I have got 7 years on mine, maybe i should use it more. ...Bob
                              Seven years out of a bottle of argon?

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