I have another question. I had to replace my wh. I have a union right after my shut off valve for the line going to the wh. After I put everything back together, I leak checked it w/ windex(this is what a local guy told me to use) I have no bubbles forming, but every so ofter I'll sniff check that union and it will smell like nat. gas for the first sniff and then I can't smell it after that. Could it be that with the 59yr old valve right there that maybe I'm smelling it? Any suggestions?
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Gas union question