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Question Re: Flare Fittings and Air Hose

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  • Question Re: Flare Fittings and Air Hose

    I've posted before about a VacuBlast sandblasting cabinet that I'm working on getting back to usable condition. It was recommended that I replace the VacuBlast gun with a Clemco style gun, like this one: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

    Well I bought it and I have to say that it is much more comfortable to grip than the VacuBlast one but I'm struggling to find an adapter to hook it up to the compressed air line in the cabinet. The air jet has a 45*, 1/2" male flare on it. Here's a better picture: http://clemtex.com/products/clemco-1...n-asmbly-8-bnp

    The bulkhead in the cabinet is a 1/2" female NPT fitting. Where can I find either an air hose with a flare fitting on one end and an NPT fitting on the other end OR where can I find an adapter with a female flare on one end and an NPT or similar fitting on the other end to accept a standard air hose / barb.

    Any ideas? Couldn't find what I wanted at Home Depot (no surprise) or McMaster... Home Depot actually came close with a flare "swivel", consisting of a short length of copper tubing and a female flare on either side. I could have coupled that with a standard male flare to NPT and be all set... but that was only available for 3/8" flares. I could make my own version of that, but I need a short section of 1/2" soft copper tubing. That seems to be only available in 10' lengths and costs $50-60, which is a lot for a single tiny fitting!

    Home Depot swivel part: https://www.homedepot.com/p/Everbilt...1259/300096280

  • #2
    If you only need a few inches, HD has short lengths of brass last I checked, as well as the hard copper block-off tubes. (solder job). worked OK on my air compressor head.
    25 miles north of Buffalo NY, USA

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    • #3
      SAE air fittings-

      https://www.mcmaster.com/air-hose-fittings

      Metal Push-On Barbed Hose Fittings for Air and Water

      Pages 350 and 351
      Last edited by wierdscience; 03-27-2020, 12:39 AM.
      I just need one more tool,just one!

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      • #4
        Originally posted by wierdscience View Post
        SAE air fittings-

        https://www.mcmaster.com/air-hose-fittings

        Metal Push-On Barbed Hose Fittings for Air and Water

        Pages 350 and 351
        Excellent. Thank you. Looks like this would work but it leads to another question! https://www.mcmaster.com/53485k17

        Do I really need the $300+ installation tool for push on tubing or can I use ordinary air hose on the barb with a hose clamp? Anyone play with these before?

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        • #5
          Originally posted by Fasttrack View Post

          Excellent. Thank you. Looks like this would work but it leads to another question! https://www.mcmaster.com/53485k17

          Do I really need the $300+ installation tool for push on tubing or can I use ordinary air hose on the barb with a hose clamp? Anyone play with these before?
          No, I've used push-loc hose and fittings for years. Once you push one together, you'll have to cut the hose to get it off. The larger sizes are hard to assemble by hand. Try a little lube, and if needed, clamp the hose in your vise, and bang it together with a rubber hammer.
          I cut it off twice; it's still too short
          Oregon, USA

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          • #6
            Originally posted by Tim Clarke View Post

            No, I've used push-loc hose and fittings for years. Once you push one together, you'll have to cut the hose to get it off. The larger sizes are hard to assemble by hand. Try a little lube, and if needed, clamp the hose in your vise, and bang it together with a rubber hammer.
            Just what I hoped to hear. Thanks!

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            • #7
              Don't use hose clamps. They are hard on the tubing, have a sharp end sticking out and can loosen. Use an Oetiker clamp. I usually use the 2 ear type but the stepless one give full circle pressure.
              Mike

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              • #8
                Looks to me like you could just unscrew that flare fitting from the gun and screw in whatever fitting suits your fancy.

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                • #9
                  Originally posted by metalmagpie View Post
                  Looks to me like you could just unscrew that flare fitting from the gun and screw in whatever fitting suits your fancy.
                  Unfortunately, that is not the case. That fitting and the air jet is all one piece. I could probably turn a new air jet, it looks to just be a straight tube of annodized aluminum covered with a piece of off-the-shelf latex rubber tubing. But I was looking for a quick, off-the-shelf solution.

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                  • #10
                    Originally posted by MikeL46 View Post
                    Don't use hose clamps. They are hard on the tubing, have a sharp end sticking out and can loosen. Use an Oetiker clamp. I usually use the 2 ear type but the stepless one give full circle pressure.
                    Mike
                    I looked into a similar clamping method on McMaster, but they say you need a special tool, which is again several hundred. What do you use for installing them? I definitely prefer that style of clamp over the worm gear style.

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                    • #11
                      Originally posted by Fasttrack View Post

                      I looked into a similar clamping method [Oetiker clamp] on McMaster, but they say you need a special tool, which is again several hundred. What do you use for installing them? I definitely prefer that style of clamp over the worm gear style.
                      I've using a simple nippers for years - works fine. If you're worried about the nippers cutting into the clamp, just take a grinder to it - it doesn't have to close all the way.

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                      • #12
                        My "installation tool" is a couple oak blocks about 6" long with a V-groove in them. Clamp in the vise with an inch or so sticking out, install the fitting with an Aluminum or plastic drift and a hammer.

                        If you have some left over PEX tubing the right size and the expander tool for it, that can make some nifty marr-less hose clamps.
                        I just need one more tool,just one!

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