<xs:simpleType name="IfcValveTypeEnum">
    <xs:restriction base="xs:string">
        <xs:enumeration value="airrelease" />
        <xs:enumeration value="antivacuum" />
        <xs:enumeration value="changeover" />
        <xs:enumeration value="check" />
        <xs:enumeration value="commissioning" />
        <xs:enumeration value="diverting" />
        <xs:enumeration value="drawoffcock" />
        <xs:enumeration value="doublecheck" />
        <xs:enumeration value="doubleregulating" />
        <xs:enumeration value="faucet" />
        <xs:enumeration value="flushing" />
        <xs:enumeration value="gascock" />
        <xs:enumeration value="gastap" />
        <xs:enumeration value="isolating" />
        <xs:enumeration value="mixing" />
        <xs:enumeration value="pressurereducing" />
        <xs:enumeration value="pressurerelief" />
        <xs:enumeration value="regulating" />
        <xs:enumeration value="safetycutoff" />
        <xs:enumeration value="steamtrap" />
        <xs:enumeration value="stopcock" />
        <xs:enumeration value="userdefined" />
        <xs:enumeration value="notdefined" />
    </xs:restriction>
</xs:simpleType>

• IfcValveTypeEnum
• ifc:PredefinedType
• ifc:IfcValveTypeEnum