Fittings can be added to a Pipe and they are selected to be at the start or end of the Pipe (to associate the Fitting with the node before or after the end of the Pipe) using the Fitting Data screen. The Fitting Data screen shows a list of the Fittings on a Pipe and displays a list of Fittings that are available in the Fitting database. If you need to model a specific fixed pressure loss then you should choose to include this pressure loss by adding a Component to the Pipe and then specify the fixed pressure loss on the Component Pressure Loss dialog.


The position of the Fittings affects the NPSHa (Net Positive Suction Head available) value at the Pump inlet. Fittings that are placed at the start of a Pipe will be in front of the Pump and therefore pressure loss through these Fittings will be accounted for when calculating the NPSHa at the Pump inlet. If you need to move a Fitting, you can change its position by clicking on it to open the Fitting Data screen and then selecting its position to be either at the start or end of the Pipe.

NOTE: Expansion K and Contraction K Fittings can only be placed at the end of a Pipe and therefore the position of these Fittings cannot be changed.


The following Fitting methods are available in the Fitting Database:


  • Standard K
    See Section: Standard K Fittings for further information.


  • Hooper 2K
    See Section: Hooper 2K Fittings and Calculation Theory and Method of Solution > Hooper 2K for further information
  • Darby 3K
    See Sections: Darby 3K Fittings and Calculation Theory and Method of Solution > Darby 3K for further information.
  • Expansion K
    See Sections: Expansion K Fittings and Calculation Theory and Method of Solution > Expansion K for further information.
  • Contraction K
    See Sections: Contraction K Fittings and Calculation Theory and Method of Solution > Contraction K for further information.