IfcDamperTypeEnum

BACnet MVD

#### IfcDamperTypeEnum

Natural language names

| Damper Type Enum
| Énumération des types de détecteur d'incendie

##### Semantic definitions at the type

Type definition

This enumeration defines the various types of damper

> HISTORY New enumeration in IFC2.0.

Enumeration definition

Constant | Description
--- | ---
BACKDRAFTDAMPER | Damper used for purposes of manually balancing pressure differences. Commonly operated by mechanical adjustment.
BALANCINGDAMPER | Backdraft damper used to restrict the movement of air in one direction. Commonly operated by mechanical spring.
BLASTDAMPER | Blast damper used to prevent protect occupants and equipment against overpressures resultant of an explosion. Commonly operated by mechanical spring.
CONTROLDAMPER | Control damper used to modulate the flow of air by adjusting the position of the blades. Commonly operated by an actuator of a building automation system.
FIREDAMPER | Fire damper used to prevent the spread of fire for a specified duration. Commonly operated by fusable link that melts above a certain temperature.
FIRESMOKEDAMPER | Combination fire and smoke damper used to preven the spread of fire and smoke. Commonly operated by a fusable link and a smoke detector.
FUMEHOODEXHAUST | Fume hood exhaust damper. Commonly operated by actuator.
GRAVITYDAMPER | Gravity damper closes from the force of gravity. Commonly operated by gravitational weight.
GRAVITYRELIEFDAMPER | Gravity-relief damper used to allow air to move upon a buildup of enough pressure to overcome the gravitational force exerted upon the damper blades. Commonly operated by gravitational weight.
RELIEFDAMPER | Relief damper used to allow air to move upon a buildup of a specified pressure differential. Commonly operated by mechanical spring.
SMOKEDAMPER | Smoke damper used to prevent the spread of smoke. Commonly operated by a smoke detector of a building automation system.
USERDEFINED | User-defined damper.
NOTDEFINED | Undefined damper.

##### Formal representations

XML Specification
`<xs:simpleType name="IfcDamperTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="backdraftdamper"/>
<xs:enumeration value="balancingdamper"/>
<xs:enumeration value="blastdamper"/>
<xs:enumeration value="controldamper"/>
<xs:enumeration value="firedamper"/>
<xs:enumeration value="firesmokedamper"/>
<xs:enumeration value="fumehoodexhaust"/>
<xs:enumeration value="gravitydamper"/>
<xs:enumeration value="gravityreliefdamper"/>
<xs:enumeration value="reliefdamper"/>
<xs:enumeration value="smokedamper"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>
`
EXPRESS Specification
`TYPE IfcDamperTypeEnum = ENUMERATION OF (
BACKDRAFTDAMPER,
BALANCINGDAMPER,
BLASTDAMPER,
CONTROLDAMPER,
FIREDAMPER,
FIRESMOKEDAMPER,
FUMEHOODEXHAUST,
GRAVITYDAMPER,
GRAVITYRELIEFDAMPER,
RELIEFDAMPER,
SMOKEDAMPER,
USERDEFINED,
NOTDEFINED);
END_TYPE;

EXPRESS-G diagram

`

References: IfcDamper IfcDamperType

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