#### 7.3.4.22 Pset_ValvePHistory

PSET_PERFORMANCEDRIVEN / IfcValve

| Valve performance history common attributes of a typical 2 port pattern type valve.
| バルブの履歴

buildingSMART Data Dictionary

PSD-XML

- PercentageOpen
  P_REFERENCEVALUE / IfcTimeSeries / IfcPositiveRatioMeasure

  | PercentageOpen: The ratio between the amount that the valve is open to the full open position of the valve.
  | パーセント開度: 全開時に対する開度量の比率。

- MeasuredFlowRate
  P_REFERENCEVALUE / IfcTimeSeries / IfcMassFlowRateMeasure

  | MeasuredFlowRate: The rate of flow of a fluid measured across the valve.
  | 計測流量: バルブを通過する流体の計測された流量

- MeasuredPressureDrop
  P_REFERENCEVALUE / IfcTimeSeries / IfcPressureMeasure

  | MeasuredPressureDrop: The actual pressure drop in the fluid measured across the valve.
  | 計測圧力降下: バルブを通過する際の計測された圧力降下

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