Vacuum Pipes - Pressure Loss vs. Air Flow

Calculate pressure drops in vacuum pipe lines. Based on initial vacuum pressure of 20 in Hg (67% vacuum) and steel pipes schedule 40.

Pressure Drop Calculation

Calculate pressure drops in vacuum pipelines for steel pipes schedule 40.

Conversion Factors

  • 1 in Hg = 3.37 kPa
  • 1 scfm = 0.472 nl/s

Reference

Based on initial vacuum pressure: 20 in Hg (67% vacuum)

Calculator

Inputs

Results

Pressure Drop (in Hg/100 ft)-- in Hg/100 ft
Air Flow-- nl/s
Pressure Drop (kPa/100 m)-- kPa/100 m
Pipe Diameter (in)Air Flow (scfm)Pressure Drop (in Hg/100 ft)Air Flow (nl/s)Pressure Drop (kPa/100 m)
0.5100.54.721.685
0.752019.443.37
1502.523.68.425
1.5100547.216.85
22001094.433.7
2.530015141.650.55
35002523684.25