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Maximum Flow Velocities in Water Systems

Water velocities in pipes and tubes should not exceed certain limits

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The fluid flow velocities in water systems should not exceed certain limits to avoid noise and damaging wear and tear of pipes and fittings. The table below can be used as a guide to maximum velocities:

ApplicationMaximum Velocity
Tap water (low noise) 0.5 - 0.7 1.6 - 2.3
Tap water 1.0 - 2.5 3.3 - 8.2
Cooling water 1.5 - 2.5 4.9 - 8.2
Suction boiler feed water 0.5 - 1.0 1.6 - 3.3
Discharge boiler feed water 1.5 - 2.5 4.9 - 8.2
Condensate 1.0 - 2.0 3.3 - 6.5
Heating circulation 1.0 - 3.0 3.3 - 9.8
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  • en: water velocity pipes
  • es: tuberías de velocidad del agua
  • de: Wassergeschwindigkeit Rohre
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  • Engineering ToolBox, (2003). Maximum Flow Velocities in Water Systems. [online] Available at: [Accessed Day Mo. Year].

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