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There is no one item..Sizing the proper size of a water main one has to calculate the fixture unit demand .

A fixture unit is one cubic foot of water (7.48 gallons) and each fixture is given a rating then one has to figure in friction losses through piping and fittings and developed lengh.

To much velocity you will have erosion and lots of noise plus hydraulic shock (water hammer) to little allowances for the demand and you can experience a severe pressure / volume drop

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15y ago

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