Refined Globe Valve Thrust Prediction Model to Bound Midstroke ...

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Notes (Continued): Bounding Thrust Zone - Applicability Closing stroke generally not a problem since actuator capability decreases in the closing direction – minimum margin at seating position Slide #10 # 10
Thrust Components Disc DP Force, F DP Stem Rejection Force, F P Side-load Force, F US Static Forces, F P Packing Bellows Static Piston Seal Friction Sealing Load, F SL Closing Stroke Opening Stroke Introduction Thrust Components FC = FDS + FP + FUS + FSR + FDF + FDP + FSL FO = FDS + FP + FUS + FSR + FDF + FDP Slide #11 # 11
Page 1 and 2: Refined Globe Valve Thrust Predicti
Page 3 and 4: Identify key limitations of Two-poi
Page 5 and 6: Background - Continued • EPRI con
Page 7 and 8: The two-point two point model is th
Page 9: Bounding Thrust Zone - Applicabilit
Page 13 and 14: Example of Geometric Dependency (e.
Page 15 and 16: Test Specimen 4” Globe Valve Un
Page 17 and 18: KEI Flow Loop Testing 4-inch 150# u
Page 19 and 20: Disc Differential Pressure Force (F
Page 21 and 22: Key Conclusions Conclusion from Tes
Page 23 and 24: BTZ Prediction and Test Data Compar

Refined Globe Valve Thrust Prediction Model to Bound Midstroke ...

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