Prior to creating a new parts list, use the Set Pressure Network Catalog dialog box to select the catalog that will serve as the source for components used in the parts list. A pressure network parts list can contain parts from only one catalog. Each pressure network catalog is comprised of a single SQLite database.
The default pressure network catalogs contain a wide variety of pressure network parts. Parts in a catalog can include pipes, fittings (such as bends and tees), and appurtenances (such as valves).