#### 7.3.3.3 IfcFilter

| Filtre
| Filter

A filter is an apparatus used to remove particulate or gaseous matter from fluids and gases.

> 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 78.

Type
IfcFilterType
Table 78 — IfcFilter Object Typing

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

Properties for Occurrences

The Properties for Occurrences concept applies to this entity as shown in Table 79.

PredefinedType | Name
--- | ---
| Pset_FilterPHistory
| Pset_FilterTypeCommon
WATERFILTER | Pset_FilterTypeWaterFilter
Table 79 — IfcFilter Properties for Occurrences

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

Ports

The Ports concept applies to this entity as shown in Table 80.

PredefinedType | Name | Flow | Type | Description
--- | --- | --- | --- | ---
ODORFILTER | Inlet | SINK | EXHAUST | Incoming fluid.
ODORFILTER | Outlet | SOURCE | EXHAUST | Outgoing fluid.
STRAINER | Inlet | SINK | DRAINAGE | Incoming fluid.
STRAINER | Outlet | SOURCE | DRAINAGE | Outgoing fluid.
WATERFILTER | Inlet | SINK | DOMESTICCOLDWATER | Incoming fluid.
WATERFILTER | Outlet | SOURCE | DOMESTICCOLDWATER | Outgoing fluid.
Table 80 — IfcFilter Ports

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

Spatial Containment

The Spatial Containment concept applies to this entity.

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

Body Geometry

The Body Geometry concept applies to this entity as shown in Table 81.

RepresentationType | Geometry
--- | ---
MappedRepresentation | IfcMappedItem
Table 81 — IfcFilter Body Geometry

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

XSD Specification:

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

EXPRESS Specification:

ENTITY IfcFilter

| SUBTYPE OF (IfcFlowTreatmentDevice);

PredefinedType | : | OPTIONAL IfcStrippedOptional;

| WHERE

CorrectPredefinedType | : | NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcFilterTypeEnum.USERDEFINED) OR ((PredefinedType = IfcFilterTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned | : | (SIZEOF(IsTypedBy) = 0) OR ('IFCHVACDOMAIN.IFCFILTERTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));

END_ENTITY;

Formal Propositions:

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

Inheritance Graph:

ENTITY IfcFilter

| 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 IfcFlowTreatmentDevice

| ENTITY IfcFilter

PredefinedType | : | OPTIONAL IfcStrippedOptional;

END_ENTITY;

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