The water velocity in a copper tube should be kept within certain limits to avoid erosion, corrosion and excessive noise generation.
- in cold water systems - the velocities should not exceed 8 feet per second (2.4 m/s)
- in hot water systems with temperatures below 140 oF (60 oC) - the velocities should not exceed 5 feet per second (1.5 m/s)
- in hot water systems with temperatures above 140 oF (60 oC) - the velocities should not exceed 2 feet per second (0.6 m/s)
Note - be aware - and take care of - that local velocities in small tubes, bends and similar obstructions may exceed the values above.
Hot and cold water service systems - design properties, capacities, sizing and more.
Dimensions of threadless copper pipes according ASTM B302.
Dimensions of seamless copper pipes according ASTM B42.
Dimensions of seamless copper tubes for natural gas and liquified petroleum.
Water and gas copper tubes according ASTM B88 - type K, L and M - imperial units.
Working pressures of metric sized copper tubes according the BS (British Standard) 2871.
Water flow and pressure loss (psi/ft) due to friction in copper tubes ASTM B88 Types K, L and M.
Maximum space between supports aand clips for copper tubes.
Physical characteristics of copper tubes ASTM B 88 type K.
ASTM B88 seamless copper water tubes - working pressures.
Dimensions of EN 1057 Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heating applications.
Dimensions of copper tubes according EN 12449.
Calculate fluid velocity and volume flow in pipes and tubes.
Solder joints and their pressure ratings according ASME B16.18.
Uniform, pitting, galvanic, crevice, concentration cell and graphitic types of corrosion.
Free online tool for designing water supply systems in buildings.