Questions tagged [npt]

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Can you break a black iron fitting by overtightening?

I recently did some plumbing work in my house which involved using threaded (NPT) black iron fittings in the 1" and 2" sizes. At the outset I was concerned that I could overtighten them and crack the ...
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Which side of an over-tightened brass NPT joint needs to be replaced?

I have a brass nipple screwed into a brass elbow and the joint is leaking. After half a dozen tries at re-wrapping with teflon tape, I decided to see if I could just tighten the problem away. ~150 ...