Filling a hole in brass

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My boss throwed away a flow meter because it had the low pressure hose thread stripped out. Can that hole be filled in and then put a T under the gauge? If so how to fill the hole. Thanks Harold
Reply:I have done work like that by putting in a helicoil, re threading for a slightly higher diameter, or brazing (the brazing is touchy) then re threading.. Do you have a picture of this piece?Co-Own CNC shop:Miller :1251 plasma cutter, MaxStar 700 TIG/Stick, & XMT 456 Multiprocess Welder.&  2 Hypertherm HPR260's Plasma CutterSorry I had a bad stroke but now I am back.
Reply:OAdoctor may be able to get you the damaged piece and you can just replace it. Not the cheapest solution, but the best. Or talk to him, and send him the reg to repair.www.regulatortorchrepair.com Specter got the one I would choose to look at first, rethreading to a larger size.  The problem most likely is that you will most likely need acess to a lathe and someone who knows how to run it to make up the adapter to install. I'm not sure if they sell NPT helicoils or not, and then whether they would seal 100% for gas.My next thought if you are willing to tear down the reg, would be silver solder, as apposed to brazing. I wouldn't try to F with the threads and buildup, I'd insert the fitting then sil solder the thing in place..Last edited by DSW; 01-12-2010 at 10:09 AM..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:If the part is mostly plastic so heat can't be used, the hole still could be opened up to cylindrical, an internally threaded insert made to fit, and it could be held in place with stud-grade Loctite, assuming this is for inert gasses. I'd use the silver solder if possible, as DSW suggested above.
Reply:the output is most likely low enough pressure to allow you to epoxy a fitting in place.if it fails,the worse you're looking at is a few bucks worth of shielding gas.it's not going to burn or explode.jb-weld would do it.
Reply:Originally Posted by boatbuoythe output is most likely low enough pressure to allow you to epoxy a fitting in place.if it fails,the worse you're looking at is a few bucks worth of shielding gas.it's not going to burn or explode.jb-weld would do it.
Reply:since this is a flow meter ,not a regulator,i cant see it being used for anything other than shielding gas. actually,jb weld is a pretty good product.
Reply:JB Weld has worked for me in lots of places. Just that a welder usually thinks in terms of welding. I think I will just fill up that hole and screw out the low pressure gauge and screw in the hose fitting. My other flow meter doesnt have a low pressure gauge either. Thanks Guys