Pipe Insulation

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Mattv_2
Mattv_2 Posts: 12
in THE MAIN WALL
This may be a dumb question. I need to buy pipe insulation for my steam system. How do I measure the diameter of the pipes correctly?

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  • Constantin
    Constantin Posts: 3,796
    Well, the easiest way...

    ... is to take a tape measure and wrap it around the pipe until it overlaps. Divide the length by pi (3.141) and you get the actual outer diameter. Then use a lookup chart or ask a knowledgable person what the nominal pipe size is for the actual pipe diameter you measured.

    IIRC, pipe diameters are measured from the inside, so you have to subtract 2 wall thicknesses (i.e. 2x 1/8" or whatever it is) to come close to the nominal number.
  • Mattv_2
    Mattv_2 Posts: 12
    Thank you

    Thanks for the reply.
  • DanHolohan
    DanHolohan Posts: 16,736
    Far easier

    Mini Rocket, especially if there's insulation on the pipes. Just slit the pipe with a knife and slide the tool into the slot.
    Retired and loving it.
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