tig brazing brass plumbing fittings. could use some pointers

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I need to make some adators to an air hose and would need to join some brass plumbing fittings. I got some CuSi3 rods and ideally would try some tig brazing.Having no earlier experiense with brass(and tig brazing), the first try I made today, was terrible. It was popping and crackling and splashing like crazy. As I understand, its caused by the zink in the brass?Is there anything that can be done, so I could get a seam, thats going to hold some air pressure? With Tig brazing i mean.Thanks,
Reply:A better solution would be silver soldering the brass parts together using something like 45% solder. I am assuming the parts are fairly small, the joints can be fitted together fairly closely, and you have access to a propane torch, or more. There may be some tricks to improve what you're attempting to do, but I don't know any that make it a good or easy process.
Reply:It's the zinc in the brass that's causing your issue as you've stated.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:Another point comes to mind that is important when casting parts with unknown red metals. Some brass such as is/was used for fittings contains lead for better machinability. When melted with Silicon-containing alloys such as Silicon Bronze, Lead Silicate crystals form when the molten metal solidifies. That is rather abrasive on cutting tools and also doesn't help with the strength of joints or thin sections.