Pipe Fittings
how do i install galvanized pipe fittings without leaks.?
i bought fittings from Home Depot. The short nipples kept leaking from a T that i bought. I wrapped the threads 3 times around with teflon tape. Could i have overtightened it? i tightened it more after i saw the leak, but it still leaked just as much. any advice on how much teflon and how much to tighten them? Or maybe the fittings were defective? should i use pipe dope or something?
thanks for all the help. where do i get good quality fittings?
Here are the basics for working with steel pipe - galvanized or black.
First, always use 2 wrenches when you put joints together. One holds the fitting and the other holds the pipe. NEVER tighten a nipple or fitting against other installed piping. Otherwise you cannot get a very tight joint and you might damage the already made joint. Torque is king and you probably can't over tighten it unless you have excessively large pipe wrenches. Remember too, wrenches and most pliers are only designed to turn in one direction and you should pull them toward each other when you are tightening.
Teflon tape should work if that is what you have at hand and you have put enough on. Make sure you wind it with the tail end facing the opposite direction that you screw it on, i.e. if you are holding the pipe in your left hand you would wrap it away from you on top. If not, it will bunch up or slide off the threads when you are putting things together. Now that you have smashed teflon into the threads you might take it apart and wrap it a few more times with tape for a better seal.
Your main problem may be the Chinese fittings you bought at Depot. I occasionally buy some there and have had several issues with poorly cut fittings, some wouldn't even allow you to thread nipples straight in, some have splits and I've even seen some with no threads cut at all. Inspect them carefully when you buy them for notched, broken, split or uneven threads or fitting bodies. Test fit nipples and fittings with pieces off the shelf.
Good Luck!
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Butt Welded Pipe Fittings
