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I'm using PEX pipes for water tubing, but I'm not sure which sleeve type should I use for hot and cold water pipes.

Whats the difference between black, blue and red sleeves? and which should I be using for hot and cold water pipes

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I think universally, red is hot, and blue is cold. – Gunner Feb 24 at 20:16
the black got me confused and made me rethink this :) – Ahmad Saleh Feb 24 at 20:17
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Basically, the dye used in the plastic. Most of the stuff being sold around here is clear translucent (undyed) and as mentioned, when dyed is available, red-hot and blue-cold. – Fiasco Labs Feb 24 at 22:11

1 Answer

up vote 5 down vote accepted

The color is just for convenience. Making it easy to identify hot and cold pipes under a house for instance. The chemical makeup and temperature ratings are identical besides the actual dye used to color it.

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