7.3.3.13 IfcValve

Vanne
Ventil

A valve is used in a building services piping distribution system to control or modulate the flow of the fluid.

HISTORY  New entity in IFC4

Plumbing System Design

 Instance diagram

Identity

The Identity concept applies to this entity.

Exchange
Import R -
Export R R R R R - R R R


Object Typing

The Object Typing concept applies to this entity as shown in Table 103.
Type
IfcValveType

Table 103 — IfcValve Object Typing

Exchange
Import
Export R R


Properties for Occurrences

The Properties for Occurrences concept applies to this entity as shown in Table 104.
PredefinedTypeName
 Pset_ValvePHistory
AIRRELEASEPset_ValveTypeAirRelease
 Pset_ValveTypeCommon
DRAWOFFCOCKPset_ValveTypeDrawOffCock
FAUCETPset_ValveTypeFaucet
FLUSHINGPset_ValveTypeFlushing
GASTAPPset_ValveTypeGasTap
ISOLATINGPset_ValveTypeIsolating
MIXINGPset_ValveTypeMixing
PRESSUREREDUCINGPset_ValveTypePressureReducing
PRESSURERELIEFPset_ValveTypePressureRelief

Table 104 — IfcValve Properties for Occurrences

Exchange
Import R -
Export R R R R R - R R R


Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 105.
Exchange
Import
Export O


Material Constituents

The Material Constituents concept applies to this entity as shown in Table 106.
NameDescription
CasingMaterial from which the casing is constructed.
OperationMaterial from which the operating mechanism (such as gate, globe, plug, needle, or clack) of the valve is constructed.

Table 106 — IfcValve Material Constituents

Exchange
Import
Export


Connectivity

The Connectivity concept applies to this entity as shown in Table 107.
Exchange
Import
Export R R R


Ports

The Ports concept applies to this entity as shown in Table 108.
PredefinedTypeNameFlowTypeDescription
AIRHANDLERInletSINKNOTDEFINEDIncoming fluid.
ANTIVACUUMOutletSOURCENOTDEFINEDOutgoing fluid.
CHANGEOVERInletSINKNOTDEFINEDIncoming fluid.
CHANGEOVEROutlet#1SINKNOTDEFINEDSwitched outgoing fluid.
CHANGEOVEROutlet#2SINKNOTDEFINEDSwitched outgoing fluid.
CHECKInletSINKNOTDEFINEDIncoming fluid.
CHECKOutletSINKNOTDEFINEDOutgoing fluid.
COMMISSIONINGInletSINKNOTDEFINEDIncoming fluid.
COMMISSIONINGOutletSOURCENOTDEFINEDOutgoing fluid.
DIVERTINGInletSINKNOTDEFINEDIncoming fluid.
DIVERTINGOutlet#1SINKNOTDEFINEDOutgoing fluid.
DIVERTINGOutlet#2SINKNOTDEFINEDOutgoing fluid.
DOUBLECHECKInletSINKNOTDEFINEDIncoming fluid.
DOUBLECHECKOutletSINKNOTDEFINEDOutgoing fluid.
DOUBLEREGULATINGInletSINKNOTDEFINEDIncoming fluid.
DOUBLEREGULATINGOutletSINKNOTDEFINEDOutgoing fluid.
DRAWOFFCOCKInletSINKNOTDEFINEDIncoming fluid.
FAUCETInletSINKNOTDEFINEDIncoming fluid.
FLUSHINGInletSINKNOTDEFINEDIncoming fluid.
FLUSHINGOutletSINKNOTDEFINEDOutgoing fluid.
GASCOCKInletSINKGASIncoming fluid.
GASTAPInletSINKGASIncoming fluid.
ISOLATINGInletSINKGASIncoming fluid.
ISOLATINGOutletSOURCEGASOutgoing fluid.
MIXINGInlet#1SINKNOTDEFINEDIncoming fluid to be mixed.
MIXINGInlet#2SINKNOTDEFINEDIncoming fluid to be mixed.
MIXINGOutletSOURCENOTDEFINEDOutgoing fluid.
PRESSUREREDUCINGInletSINKNOTDEFINEDIncoming fluid.
PRESSUREREDUCINGOutletSOURCENOTDEFINEDOutgoing fluid.
PRESSURERELIEFInletSINKNOTDEFINEDIncoming fluid.
REGULATINGInletSINKNOTDEFINEDIncoming fluid.
REGULATINGInletSOURCENOTDEFINEDOutgoing fluid.
SAFETYCUTOFFInletSINKNOTDEFINEDIncoming fluid.
SAFETYCUTOFFOutletSOURCENOTDEFINEDOutgoing fluid.
STEAMTRAPInletSINKNOTDEFINEDIncoming fluid.
STEAMTRAPOutletSOURCENOTDEFINEDOutgoing fluid.
STOPCOCKInletSINKNOTDEFINEDIncoming fluid.

Table 108 — IfcValve Ports

Exchange
Import R -
Export R R R R R - R R R


Body Geometry

The Body Geometry concept applies to this entity as shown in Table 109.
RepresentationTypeGeometry
MappedRepresentationIfcMappedItem

Table 109 — IfcValve Body Geometry

Exchange
Import
Export R R R R


XSD Specification:

 <xs:element name="IfcValve" type="ifc:IfcValve" substitutionGroup="ifc:IfcFlowController" nillable="true"/>
 <xs:complexType name="IfcValve">
  <xs:complexContent>
   <xs:extension base="ifc:IfcFlowController"/>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcValve
SUBTYPE OF (IfcFlowController);
PredefinedType : OPTIONAL IfcStrippedOptional;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcValveTypeEnum.USERDEFINED) OR ((PredefinedType = IfcValveTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR ('IFCHVACDOMAIN.IFCVALVETYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Formal Propositions:

CorrectPredefinedType : Either the PredefinedType attribute is unset (e.g. because an IfcValveType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned : Either there is no valve type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcValveType.

Inheritance Graph:

ENTITY IfcValve
ENTITY IfcRoot
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
INVERSE
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcObject
ObjectType : OPTIONAL IfcStrippedOptional;
INVERSE
IsDeclaredBy : SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares : SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy : SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy : SET OF IfcRelDefinesByProperties FOR RelatedObjects;
ENTITY IfcProduct
ObjectPlacement : OPTIONAL IfcObjectPlacement;
Representation : OPTIONAL IfcProductRepresentation;
INVERSE
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcStrippedOptional;
INVERSE
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasOpenings : SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
ProvidesBoundaries : SET OF IfcRelSpaceBoundary FOR RelatedBuildingElement;
ConnectedFrom : SET OF IfcRelConnectsElements FOR RelatedElement;
ContainedInStructure : SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;
ENTITY IfcDistributionElement
INVERSE
HasPorts : SET OF IfcRelConnectsPortToElement FOR RelatedElement;
ENTITY IfcDistributionFlowElement
INVERSE
ENTITY IfcFlowController
ENTITY IfcValve
PredefinedType : OPTIONAL IfcStrippedOptional;
END_ENTITY;

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