Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Natural Gas Piping - Sizing vs. Capacity

Sizing natural gas pipes - pressures above 5 psi (35 kPa).

The tables and diagrams below can be used to size natural gas pipes with pressures above 5 psi (35 kPa) .

For full table - rotate the screen!

Natural Gas Piping - Sizing
Pressure
(psig)
Capacity of 100 ft Steel Pipe Schedule 40 ( MBH ≈ CFH )
Pipe Dimension (in)
UpstreamDownstream1/23/411 1/41 1/222 1/2345
10 9.5 355 745 1400 2880 4310 8305 13240 23400 47730 86350
9.0 515 1080 2030 4160 6240 12020 19150 33860 69060 124940
9 8.5 350 730 1370 2815 4210 8120 12940 22880 46600 84420
8.1 475 995 1875 3850 5770 11100 17700 31300 63840 115500
8 7.6 300 630 1190 2440 3650 7040 11215 19830 40440 76170
7.2 440 910 1720 3530 5290 10190 16240 28710 58560 105940
7 6.6 290 615 1160 2380 3565 6865 10940 19345 39460 71390
6.3 395 830 1560 3210 4810 9260 14760 26090 53210 96260
6 5.7 245 515 970 1990 2990 5730 9140 16160 32950 59620
5.4 355 745 1400 2880 4310 8310 13245 23415 47760 86400
5 4.7 240 500 940 1935 2900 5580 8895 15730 32080 58030
4.5 315 660 1240 2540 3810 7340 11695 20680 42170 76300
  • inlet upstream pressure is more than 5 psig (35 kPa)
  • fittings factor 1.2 - equivalent pipe length = pipe length + 20%
  • steel pipes schedule 40

For natural gas the nominal BTU/cf varies from about 900 to 1100 BTU/cf. In general it is common to set

  • 1 Cubic Foot (CF) = Approx 1,000 BTUs
  • 1 CFH ≈ 1 MBH (MBH is thousands of BTUs per hour)
  • 1 MBH is equivalent to 1000 BTU's per hour (0.29 kW = 0.29 kJ/s)
  • 1 Btu/h = 0.293 W
  • 1 lb = 0.4536 kg
  • 1 ft (foot) = 0.3048 m
  • 1 in water = 248.8 N/m2(Pa) = 0.0361 lb/in2(psi) = 25.4 kg/m2= 0.0739 in mercury
  • 1 psi (lb/in2) = 6,894.8 Pa (N/m2)

Natural Gas Pipe Capacity Diagram - 10% Pressure Drop

natural gas pipe capacity diagm

Related Topics

Related Documents

Search

Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

We use a third-party to provide monetization technologies for our site. You can review their privacy and cookie policy here.

You can change your privacy settings by clicking the following button: .

Citation

This page can be cited as

  • The Engineering ToolBox (2005). Natural Gas Piping - Sizing vs. Capacity. [online] Available at: https://www.engineeringtoolbox.com/natural-gas-pipe-sizing-d_828.html [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter

















































4.19.9

.