IfcDuctFittingTypeEnum

Definition from IAI: This enumeration is used to identify the primary purpose of a duct fitting. This is a very basic categorization mechanism to generically identify the duct fitting type. Subcategories of duct fittings are not enumerated. The IfcDuctFittingTypeEnum contains the following:

- BEND: A fitting with typically two ports used to change the direction of flow between connected elements.
- CONNECTOR: Connector fitting, typically used to join two ports together within a flow distribution system (e.g., a coupling used to join two duct segments).
- ENTRY: Entry fitting, typically unconnected at one port and connected to a flow distribution system at the other (e.g., an outside air duct system intake opening).
- EXIT: Exit fitting, typically unconnected at one port and connected to a flow distribution system at the other (e.g., an exhaust air discharge opening).
- JUNCTION: A fitting with typically more than two ports used to redistribute flow among the ports and/or to change the direction of flow between connected elements (e.g, tee, cross, wye, etc.).
- OBSTRUCTION: A fitting with typically two ports used to obstruct or restrict flow between the connected elements (e.g., screen, perforated plate, etc.).
- TRANSITION: A fitting with typically two ports having different shapes or sizes. Can also be used to change the direction of flow between connected elements.
- USERDEFINED: User-defined fitting.
- NOTDEFINED: Undefined fitting.

> HISTORY: New enumeration in IFC 2x2

EXPRESS specification:

TYPE IfcDuctFittingTypeEnum = ENUMERATION OF
( | BEND, CONNECTOR, ENTRY, EXIT, JUNCTION, OBSTRUCTION, TRANSITION, USERDEFINED, NOTDEFINED);
END_TYPE;