What size water pipe do I need for a given GPM?
In Find pipe size mode, enter your target flow and the tool sizes the diameter for no more than 75% of the material velocity ceiling, then rounds up to the next standard nominal size. Friction loss at that size is computed with the Hazen-Williams equation using the material C-factor, including any equivalent length you add for fittings. It also warns if velocity still exceeds the ceiling.
Answers
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