Re: Sizing water supply lines
Posted by hj on March 12, 19100 at 08:51:43:
In response to Re: Sizing water supply lines
Also consider that those measurements refer to the internal diameter of the pipe. CPVC, for example, has the same EXTERNAL diameter as copper, but the internal diameter is usually one size smaller than the corresponding copper tubing and if you compute the area of the two, you will find that the smaller tubing has a huge reduction in capacity.

: The link below has information on pipe sizing for water to residential homes. For more information, you should pick up a plumbing code book that applies to your location. This link has the average situation that most people would encounter. Keep in mind that differences in length of pipe, lower pressures and local plumbing code does make a difference. Engineered systems with manifold and PEX piping would have altogether different sizing.

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