Steam Pipe Size Calculation

Reasonable Velocities for Fluid Flow through Pipes:

FLUID

PRESSURE PSI
(GAGE)

SERVICE

VELOCITIES - FPM

Saturated Steam

0 – 15

Heating mains

4,000 – 6,000

Saturated Steam

50 – up

Miscellaneous

6,000 – 8,000

Superheated Steam

200 – up

Turbine and
Boiler Leads

10,000 – 15,000

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