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Foreign Compressed Gas Cylinders

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  • Foreign Compressed Gas Cylinders

    Has anyone worked with compressed gas cylinders from Europe? Specifically nitrogen bottles. I'm looking to make up an adapter from whatever the connector is for the Euro-style bottles to be able to replace them with standard American (CGA-580) N2 bottles. If I knew the size of the nipple threads where it connects to a regulator or hose (this is normally 1/4" NPT on US CGA-580 connectors) I'm pretty sure I could find an adapter from Parker or Swagelok or somebody.

    I looked on the Compressed Gas Association web site but didn't find much about foreign bottles. I'll try calling AirGas in the morning and see what they say but just wondering if anyone here has dealt with this situation before.
    ---------------
    Light is faster than sound. That's why some people seem really bright until you hear them speak.
    ---------------
    “If I had my life to live over again, I'd be a plumber.” - Albert Einstein
    ---------
    "Its a table saw.... Do you know where your fingers are?"
    ---------
    sigpic http://www.helmetstohardhats.com/

  • #2
    Re: Foreign Compressed Gas Cylinders

    Why not just change the valve?
    http://www.all-clear-sewer.com/

    Comment


    • #3
      Re: Foreign Compressed Gas Cylinders

      Sounds easy but not an option, at least right off. We have a piece of equipment coming in that has an N2 blanket gas charge on it that must be maintained. All the equipment currently hooked up is metric such as high pressure regulator, gauges, valves, tubing, etc. (but I don't know details as yet as to sizes). We need ot be ready to swap over the bottle in case it is low when it arrives here. So we want to be able to adapt somewhere from metric to CGA-580 which is the std connector style used here in the US (and I guess Canada too but not sure) on nitrogen bottles.
      ---------------
      Light is faster than sound. That's why some people seem really bright until you hear them speak.
      ---------------
      “If I had my life to live over again, I'd be a plumber.” - Albert Einstein
      ---------
      "Its a table saw.... Do you know where your fingers are?"
      ---------
      sigpic http://www.helmetstohardhats.com/

      Comment


      • #4
        Re: Foreign Compressed Gas Cylinders

        well if it`s not as easy as a valve change have a machine shop make an adapter ? We have all kinds of stuff made for our drag boat, fittings, valves and so on
        http://www.all-clear-sewer.com/

        Comment


        • #5
          Re: Foreign Compressed Gas Cylinders

          Yep, I will probably have our machinist make a custom adapter if I don't get the info I need from the supplier in time. I was just wondering if anyone knew the fitting size on a European N2 bottle.
          ---------------
          Light is faster than sound. That's why some people seem really bright until you hear them speak.
          ---------------
          “If I had my life to live over again, I'd be a plumber.” - Albert Einstein
          ---------
          "Its a table saw.... Do you know where your fingers are?"
          ---------
          sigpic http://www.helmetstohardhats.com/

          Comment


          • #6
            Re: Foreign Compressed Gas Cylinders

            there is a regular member that is from norway that tends to do a lot of welding. he should know the answer. just can't think of his name right off the top of my head.

            if someone comes up with his name,please post and then you can p.m. him for the answer.

            rick.
            phoebe it is

            Comment


            • #7
              Re: Foreign Compressed Gas Cylinders

              Hej Plumber Rick! I think you were refering to me, RiR. I don't know about pure Nitrogen bottles, but backing gas has a valve with inch thread, which for nitrogen / hydrogen mix, is left hand thread. The normal welding gasses have also "inch dimention " thread on the valve, but are right hand thread. I'll check the dimention tommorow and get back to you.
              If you also have left hand threads on the inflammable, or partly inflammable gasses, then I would be inclined to think that the same dimentions are used in the US.

              Comment


              • #8
                Re: Foreign Compressed Gas Cylinders

                thanks, rir

                i just couldn't remember your name

                not sure if bob has already taken care of it. i know he was in a hurry.

                he should respond real soon as he is always here.

                rick.
                phoebe it is

                Comment


                • #9
                  Re: Foreign Compressed Gas Cylinders

                  I am only on here when I'm not at work or playing in the shop.

                  We get the vendor to FedEX us the setup they are using, should arrive tomorrow (I hope). We'll use that to make up an adapter(or series of adapters) to get from metric to NPT. We have a big Swagelok dealer nearby that we spend BIG bucks with every year. They should have what we need or know where to get it fast. I called our AirGas rep and he didn't know the size of the connector on a European bottle so I'm not feeling too bad. When I do get it worked out I will post what I find here for those who are interested.

                  I am hoping all we will need to do is take the bottle adapter off their metric hose and thread an adapter from metric to 1/4 NPT on there then from there a std CGA-580 will let us hook up our bottles pretty quick.

                  Just hope they have some form of isolation valve in the line downstream of the bottle so we can hold the charge in the vessel while changing the bottle connection over. Need to maintain 5.5 PSIG or void warranty, and that would be very expensive, just a little more probably than Dog and Rick and Mark AND me made in the past 3 years combined. A schematic is supposedly coming with the rig.
                  ---------------
                  Light is faster than sound. That's why some people seem really bright until you hear them speak.
                  ---------------
                  “If I had my life to live over again, I'd be a plumber.” - Albert Einstein
                  ---------
                  "Its a table saw.... Do you know where your fingers are?"
                  ---------
                  sigpic http://www.helmetstohardhats.com/

                  Comment


                  • #10
                    Re: Foreign Compressed Gas Cylinders

                    here is some possibilities,

                    If I am seeing things right it looks like a DIN-477 #10 24.32mm x 1/14 RH-ext
                    it appears to be whitworth thread of 55 degree angle,

                    or a small possibility it could be a BS341#3 but most places seem to indicate the first number(din 477-10).
                    from this source
                    http://www.druva.de/Englisch/Cylinder_connections.shtml

                    http://www.dadco.net/Bulletin%20PDF/FillingHardware.pdf

                    valve thread or connector guideline.
                    http://www.boiswood.co.uk/uploads/pd...rGuideline.PDF


                    jsut more thread info,
                    http://mdmetric.com/fastindx/t44u.pdf

                    this site has some type of aircraft adaptors, don't know if they are any thing like your looking for,
                    http://www.florida-aeronautics.com/c...tors,%20Valves
                    Push sticks/blocks Save Fingers
                    ~~~~~~~~~~~~~~~~~~~
                    "The true measure of a man is how he treats someone who can do him absolutely no good."
                    attributed to Samuel Johnson
                    ~~~~~~~~~~~~~~~~~~~
                    PUBLIC NOTICE: Due to recent budget cuts, the rising cost of electricity, gas, and oil...plus the current state of the economy............the light at the end of the tunnel, has been turned off.

                    Comment


                    • #11
                      Re: Foreign Compressed Gas Cylinders

                      it may just depend on the country of origin, as this ulr gives more possibilities,

                      http://www.airproducts.co.uk/special...ifications.htm
                      Push sticks/blocks Save Fingers
                      ~~~~~~~~~~~~~~~~~~~
                      "The true measure of a man is how he treats someone who can do him absolutely no good."
                      attributed to Samuel Johnson
                      ~~~~~~~~~~~~~~~~~~~
                      PUBLIC NOTICE: Due to recent budget cuts, the rising cost of electricity, gas, and oil...plus the current state of the economy............the light at the end of the tunnel, has been turned off.

                      Comment


                      • #12
                        Re: Foreign Compressed Gas Cylinders

                        bhd, ok, you and bob scare me with all this research

                        don't know where you guys come up with this stuff

                        keep up the good research

                        rick.
                        phoebe it is

                        Comment


                        • #13
                          Re: Foreign Compressed Gas Cylinders

                          I called my gas supplier this morning, (Air Liquide, French-Danish)
                          In Norway, the Threads on the bottle valve for Nitrogen are "24/32 WG, 14threads per inch." He wasn't sure what is used in the US, but in Europe,different threads are used for different gasses, to avoid the use of a wrong regulator. The British of course, do their own thing, as usuall, and use a system of their own. It is reasonably certain that the threads are NOT Metric, Just don't ask me why. I would suggest contacting a gas supplier in the country of origin,(Europe isn't just Europe) and asking them directly, which threading they use for Nitrogen. Air liquide is found everywhere, they aren't the cheapest, but they are very good at special stuff, and customer service.
                          My suggestion would be to use a US regulator on the US bottle, and change at the hose! As regards purging, then the company that has this equipment, must have a standard procedure for bottle change, and any decent European company should be aware of US dimentions & standards if doing buisiness in the US.
                          If there still are problems, then I would suggest contacting Air Liquide in Denmark, as they, like most Danish companies, are used to working with customers from other countries, and have a knowledge of the quirks etc.
                          If you get no-where fast, then PM me.

                          Comment


                          • #14
                            Re: Foreign Compressed Gas Cylinders

                            Hey everyone, thanks for your research and help. I'll look at it again in the morning at work. Supposedly they FedEX'd the hose ahead of the unit and it should arrive tromorrow according to FedEX's tracking site, so we will know for sure what we are dealing with. I'm gonna be very busty the next few days. Hopefully I will have some photos to share if we are allowed to take any.
                            ---------------
                            Light is faster than sound. That's why some people seem really bright until you hear them speak.
                            ---------------
                            “If I had my life to live over again, I'd be a plumber.” - Albert Einstein
                            ---------
                            "Its a table saw.... Do you know where your fingers are?"
                            ---------
                            sigpic http://www.helmetstohardhats.com/

                            Comment

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