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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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