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

Hot Water Systems - Equivalent Length vs. Fittings Resistance

Equivalent length of fittings like bends, returns, tees and valves in hot water heating systems - equivalent length in feet and meter.

The minor loss in a system component can be converted to the "equivalent length" of a pipe or tube that would give the same major head loss.

Equivalent lengths of fittings like

  • elbows - regular 90o, long radius 90o, regular 45o
  • tees - line flow and branch flow
  • return bends - regular and long radius
  • valves - globe, gate, angle and swing check
  • strainers

in hot water piping systems are indicated in the tables below.

Screw Fittings - equivalent length in feet

Equivalent length (in feet) of straight pipe for fittings like bends, returns, tees and valves. (Pipe size in inches)

Piping - Equivalent length of screwed fittings - feet

Screw Fittings - equivalent length in meter

Equivalent length (in meter) of straight pipe for fittings like bends, returns, tees and valves.

Piping - equivalent length of screwed fittings - meter

Flange Fittings - equivalent length in feet

Equivalent length (in feet) of straight pipe for fittings like bends, returns, tees and valves.

Piping - equivalent length of flanged fittings - feet

Flange Fittings - equivalent length in metre

Equivalent length (in meter) of straight pipe for fittings like bends, returns, tees and valves.

Piping - equivalent length of flanged fittings - meter

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 (2003). Hot Water Systems - Equivalent Length vs. Fittings Resistance. [online] Available at: https://www.engineeringtoolbox.com/resistance-equivalent-length-d_192.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

















































6.3.17

.