Seat Leakage Classification Valve 선정 시 ANSI/FCI 70.2에 준하는 Leakage Class를 P&ID 상의 공정 Requirement 에 맞게 기입한다. (TSO - Tight Shut Off 등) TSO가 P&ID상 표기되어 있지 않다면 Globe Valve의 경우 Standard하게 Class IV로 해도 무리는 없다.
TSO가 요구되는 경우 Metal Seat Valve 는 Class V, Soft Seat Valve 는 Class VI를 적용한다. Metal Seat Valve : Metal Plug & Metal Seat Valve Soft Seat Valve : Soft (Teflon or similar) Plug or Seat or Both ANSI B16.104-1976의 Control Valve 규정에 의하면 Cv가 0.1 이상일 때 Class 6 가지로 구분된다.
이 표준은 품질의 균일을 위한 것이며 실제조건 하에서 기밀을 측정...
![[계장/Valve] Leakage Class](https://mblogthumb-phinf.pstatic.net/MjAyMzA0MDlfMjU4/MDAxNjgxMDI3Mjk0Mzg0.SIlPtpOBgCjmMxJrnF-9id6-IhE2ZJ433uFVKPPDFV8g.fAJ-_J8mzjL0gPVocexK8bTHIG0Y0TWCx23p0fhp5KYg.PNG.ahrah23/Image.png?type=w2)
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ControlValve
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LeakageClass
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LeakageClassification
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MetalSeat
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SeatLeakage
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SoftSeat
원문 링크 : [계장/Valve] Leakage Class
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