Viscous Liquids - Friction Loss

Friction loss in steel pipes - for fluids with viscosities ranging 32 - 80000 SSU

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Friction loss in steel pipes for fluides with various viscosities are indicated in the diagrams below.

Note that kinematic viscosity SSU 32 (1 centiStokes) equals viscosity of water at normal room temperature. Kinematic viscosity SSU 2000 (440 centiStokes) equals SAE 140 Gear Oil.

  • 1 psi/ft = 27.7 inH2O/ft = 22.6 kPa/m
  • 1 gpm = 0.23 m3/h

Pipe Size 1/2"

Pipe - pressure loss due to friction with viscous liquids - pipe size 1/2

Pipe Size 3/4"

Pipe - pressure loss due to friction with viscous liquids - pipe size 3/4

Pipe Size 1"

Pipe - pressure loss due to friction with viscous liquids - pipe size 1

  • 1 psi/ft = 27.7 inH2O/ft = 22.6 kPa/m
  • 1 gpm = 0.23 m3/h

Pipe Size 1 1/4"

Pipe - pressure loss due to friction with viscous liquids - pipe size 1 1/4

Pipe Size 1 1/2"

Pipe - pressure loss due to friction with viscous liquids - pipe size 1 1/2

Pipe Size 2"

Pipe - pressure loss due to friction with viscous liquids - pipe size 2

Pipe Size 2 1/2"

Pipe - pressure loss due to friction with viscous liquids - pipe size 2 1/2

Pipe Size 3"

Pipe - pressure loss due to friction with viscous liquids - pipe size 3

Pipe Size 4"

Pipe - pressure loss due to friction with viscous liquids - pipe size 4

  • 1 psi/ft = 27.7 inH2O/ft = 22.6 kPa/m
  • 1 gpm = 0.23 m3/h

Related Topics

  • Fluid Mechanics - The study of fluids - liquids and gases. Involves velocity, pressure, density and temperature as functions of space and time
  • Fluid Flow and Pressure Drop - Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more

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