Tip: Modifying and Deleting Valve Numbers
In addition to modifying and deleting valve numbers using the Replace Fitting dialog box, you can also modify and delete valve numbers of a selected fitting using one of the following methods:
• Use the Parameters dialog box that opens when you click > 
Parameters.
Parameters.• Use the Piping System Tree by setting the VALVENUMBER string parameter as one of the display Feat Params columns in the Model Tree Columns dialog box. Select the box specific to a valve in the Piping System Tree and delete or modify the valve number.
• Use the Model Tree by selecting the box specific to a valve in the model tree and deleting or modifying the valve number.
 | You can use the Model Tree to create, modify, or delete valve numbers even if you set the value of the VALVE_NUMBER parameter in the Fitting Category Map file to no. As good practice, avoid using the Model Tree to create, modify, or delete valve numbers. |