7.5.2.12 IfcDamperTypeEnum
7.5.2.12.1 Semantic definition
This enumeration defines the various types of damper
7.5.2.12.2 Type values
| Type | 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 prevent 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.  | 
7.5.2.12.3 Formal representation
TYPE IfcDamperTypeEnum = ENUMERATION OF
	(BACKDRAFTDAMPER
	,BALANCINGDAMPER
	,BLASTDAMPER
	,CONTROLDAMPER
	,FIREDAMPER
	,FIRESMOKEDAMPER
	,FUMEHOODEXHAUST
	,GRAVITYDAMPER
	,GRAVITYRELIEFDAMPER
	,RELIEFDAMPER
	,SMOKEDAMPER
	,USERDEFINED
	,NOTDEFINED);
END_TYPE;