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  1. #1
    Member EluSiOn's Avatar
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    Question [Help] PVC T/Resevior Project

    I need a bit help with my PVC T/ Resevior project

    I saw this...



    but its size is 3/4" Clear PVC Adapter MPT x Slip

    I know what is NPT... and also pipe size...

    NPT: National Pipe Taper Thread
    A sealant compound or Teflon tape must be used for a leak-free seal.
    FPT: female (internal) National Pipe Taper threads
    MPT: male (external) National Pipe Taper threads

    what is that 3/4"? for the length of the PVC? or it is 3/4" NPT?

  2. #2
    Underwater Senior Member
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    The way you wrote it and also judging from the picture, it's 3/4" Male pipe thread x 3/4" slip fitting. That's for a 3/4" standard (pvc size) pipe to slip into and glue into place, so that would make it about 1" ID (to fit a 3/4" pipe's actual Outside diameter).
    From the pic, I'd say that cavity on the right is about an 1 1/2" deep.

  3. #3
    Completely NUTS UberBlue's Avatar
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    Originally posted by Diggrr
    The way you wrote it and also judging from the picture, it's 3/4" Male pipe thread x 3/4" slip fitting. That's for a 3/4" standard (pvc size) pipe to slip into and glue into place, so that would make it about 1" ID (to fit a 3/4" pipe's actual Outside diameter).
    From the pic, I'd say that cavity on the right is about an 1 1/2" deep.
    My vote too.

    If you mess with this stuff long enough, you just know.

  4. #4
    Member bigben2k's Avatar
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    Diggrr is right on.

    I also built several airtraps using PVC fittings, and "3/4" indeed has an ID (inside diameter) of 1". You can find actual specs on those at McMaster.com .
    Water Block Testing Alliance

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