Figure 8 from NUMERICAL ANALYSIS OF BUTTERFLY VALVE-PREDICTION OF FLOW COEFFICIENT AND HYDRODYNAMIC TORQUE COEFFICIENT | Semantic Scholar
PDF] Analysis of the hydrodynamic torque effects on large size butterfly valves and comparing results with AWWA C504 standard recommendations | Semantic Scholar
Analysis of the hydrodynamic torque effects on large size butterfly valves and comparing results with AWWA C504 standard recomm