IFC 4.3.0.1 (IFC4X3) development

7.5.2.32 IfcValveTypeEnum

7.5.2.32.1 Semantic definition

The IfcValveTypeEnum defines the range of different types of valve that can be specified. These are typically used in conjunction with Pset_ValveTypeCommon, which contains common properties for all valve types.

7.5.2.32.2 Type values

Type Description
AIRRELEASE

Valve used to release air from a pipe or fitting.

ANTIVACUUM

Valve that opens to admit air if the pressure falls below atmospheric pressure.

CHANGEOVER

Valve that enables flow to be switched between pipelines (3 or 4 port).

CHECK

Valve that permits water to flow in one direction only and is enclosed when there is no flow (2 port).

COMMISSIONING

Valve used to facilitate commissioning of a system (2 port).

DIVERTING

Valve that enables flow to be diverted from one branch of a pipeline to another (3 port).

DOUBLECHECK

An assembly that incorporates two valves used to prevent backflow.

DOUBLEREGULATING

Valve used to facilitate regulation of fluid flow in a system.

DRAWOFFCOCK

A valve used to remove fluid from a piping system.

FAUCET

Faucet valve typically used as a flow discharge.

FLUSHING

Valve that flushes a predetermined quantity of water to cleanse a toilet, urinal, etc.

GASCOCK

Valve that is used for controlling the flow of gas.

GASTAP

Gas tap typically used for venting or discharging gas from a system.

ISOLATING

Valve that closes off flow in a pipeline.

MIXING

Valve that enables flow from two branches of a pipeline to be mixed together (3 port).

PRESSUREREDUCING

Valve that reduces the pressure of a fluid immediately downstream of its position in a pipeline to a preselected value or by a predetermined ratio.

PRESSURERELIEF

Spring or weight loaded valve that automatically discharges to a safe place fluid that has built up to excessive pressure in pipes or fittings.

REGULATING

Valve used to facilitate regulation of fluid flow in a system.

SAFETYCUTOFF

Valve that closes under the action of a safety mechanism such as a drop weight, solenoid etc.

STEAMTRAP

Valve that restricts flow of steam while allowing condensate to pass through.

STOPCOCK

An isolating valve used on a domestic water service.

USERDEFINED

User-defined valve type.

NOTDEFINED

Undefined valve type.

Table 7.5.2.32.A

7.5.2.32.3 Formal representation

TYPE IfcValveTypeEnum = ENUMERATION OF
	(AIRRELEASE
	,ANTIVACUUM
	,CHANGEOVER
	,CHECK
	,COMMISSIONING
	,DIVERTING
	,DOUBLECHECK
	,DOUBLEREGULATING
	,DRAWOFFCOCK
	,FAUCET
	,FLUSHING
	,GASCOCK
	,GASTAP
	,ISOLATING
	,MIXING
	,PRESSUREREDUCING
	,PRESSURERELIEF
	,REGULATING
	,SAFETYCUTOFF
	,STEAMTRAP
	,STOPCOCK
	,USERDEFINED
	,NOTDEFINED);
END_TYPE;

7.5.2.32.4 References

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