drip at steel supply line

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flustered

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Well, despite this being a super basic question that has been probably answered many times, my forum searches are coming up empty. Image is self-explanatory......see drip. I saw one thread that says NOT to use tape, just WD 40? I have little practical experience, but I did 3 wraps w/ tape in clockwise direction, and I tried not to overtighten. Any tips would be greatly appreciated.

4246980500_e7aa3f1125_o.jpg
 
Last edited by a moderator:
joint

Use WD-40 for WHAT? Not as a thread sealant I hope, and if that was really a recommendation do NOT use that person as an advisor for anything else either. You could have a bad thread, depending on how old the pipe is, need more tape, or just use a good pipe joint compound.
 
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Use WD-40 for WHAT?
Click to expand...

If it was a "compression stop" then the lubricant would have worked on the threads, the seal being done on the sleeve.

Since this is an "Iron Pipe shutoff", then you need either pipe dope or Teflon Tape on the tapered threads.

angle_stops.jpg
 
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I would use three wraps of Teflon done neatly and tight (so it does not tear when screwed down on). And over that some pipe dope.

It never fails.
 
I'd like to add that I would start out tightening the shut off only snug. After pressurizing the pipe then tighten until the dripping stops. The warping of the fitting is very common and occurs due to overtightening.
 
Success! Used "3 wrap" red tape and this:

Local hardware store told me that plumbers asked them to carry Megaloc, because it's the best. Did the job for me!

Thanks again for all replies.
 
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I've been using Megaloc over Blue Monster Tape for about 6 months and it's never failed, even over old rough threads.
 
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