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Thread: Pipe Sizing

  1. #1
    Join Date
    Aug 2008

    Default Pipe Sizing

    How's it goin, new to the site and had a quick question. Is there a difference in diameter from an IPS thread to a NPT thread? Just have to do a quick repair and have an female Dura PVC IPS threaded elbow in ground, wondering if i could use a male Lasco NPT threaded tee to continue on, any insight on the difference between NPT and IPS would be great, thanks in advance

  2. #2
    Join Date
    Feb 2008
    Nashville, TN

    Default Re: Pipe Sizing

    the two are different thread patterns. the NPT is like for hoses and such and could be looked at as a rough thread. the IPT or Iron Pipe Thread is the common industry standard for copper threading, black iron pipe threading, brass fitting threading, etc.

    Now at lowe's or home depot, i think it is watts brand, that sells like a 100 different little baggies of fitting and such. this is the same place where you buy the different lengths of hoses and stuff. in the plumbing section.

    but they are different and won't match up without the adaptor.
    Process of elimination. Good luck.

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