#### 7.3.2.4 IfcPipeFittingTypeEnum

This enumeration is used to identify the primary purpose of a pipe fitting. This is a very basic categorization mechanism to generically identify the pipe fitting type. Subcategories of pipe fittings are not enumerated.

Enumerated Item Definitions:

- 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 pipe segments).
- ENTRY: Entry fitting, typically unconnected at one port and connected to a flow distribution system at the other (e.g., a breeching inlet).
- EXIT: Exit fitting, typically unconnected at one port and connected to a flow distribution system at the other (e.g., a hose bibb).
- 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 IFC2x2.

XSD Specification:

<xs:simpleType name="IfcPipeFittingTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="bend"/>
<xs:enumeration value="connector"/>
<xs:enumeration value="entry"/>
<xs:enumeration value="exit"/>
<xs:enumeration value="junction"/>
<xs:enumeration value="obstruction"/>
<xs:enumeration value="transition"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>

EXPRESS Specification:

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

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