Piping > Setting Up Fittings > Spec-Driven Fitting Insertion > Modifying Fittings > To Replace Fittings
  
To Replace Fittings
1. Select the fitting in the Model Tree or graphics window, right-click a choose from the shortcut menu. The Replace Fitting dialog box opens. Information about the fitting appears as read-only text.
2. The Specification, Size, and the Schedule boxes display relevant values by default. Click the Specification check box and select a different specification from the specification list to override the current specification values for the fitting that you want to replace.
 
* To replace a fitting without the schematic information, proceed to step 5.
3. If you have set the piping_schematic_driven configuration option to yes, the Schematic Driven option is available under Fitting Data. The XML file associated with the selected pipeline is also displayed.
To replace a fitting in the schematic mode, select an available fitting category icon and then select a value from the Selection name list.
The Designator box displays the ref_des value of the selected fitting. You cannot edit this value.
The Specification, Valve number, New size, and Branch size boxes are automatically updated according to the schematic information of the selected schematic fitting.
4. The Selection name section displays a default name for the fitting. Change this name by selecting another one from the list.
 
* You can replace a no-break fitting with another no-break fitting only and a break fitting with another break fitting. If you try to replace a no-break fitting with a break fitting or vice versa, an error message is displayed in the message area.
5. Specify a string that contains one or more characters or numbers, or both, in the Valve number or Number box to assign or modify a valve number or an identification number for the fitting that you want to replace.
 
* You can also use the Piping System Tree or Model Tree to modify the valve number of the selected fitting. To do so, specify the VALVENUMBER string parameter as one of the Feat Params column to be displayed in the Model Tree Columns dialog box.
6. Click OK to replace the fitting and close the dialog box.
Specification Override during Fitting Replacement
You can override the specification of a fitting that you want to replace. When replacing fittings, use the specification override feature to:
Replace an existing fitting with a fitting that has the same specification as that of the pipe segment or has a different specification.
Replace a fitting that you inserted earlier by overriding specifications, with a fitting that has the same pipe specification or a different overriding fitting specification.
Replace a fitting that you inserted earlier by overriding specifications, with a fitting that has the same specification as that of the pipe segment.