[1] Addy, A.L., Morris, M J. and Dutton, J.C. (1985) An Investigation of Compressible Flow Characteristics of Butterfly Valve. ASME Journal of Fluid Engineering, 107, 512-517.
http://dx.doi.org/10.1115/1.3242522
[2] Eom, K. (1988) Performance of Butterfly Valves as a Flow Controller. ASME Journal of Fluid Engineering, 110, 16-19.
http://dx.doi.org/10.1115/1.3243503
[3] Morris, M.J. and Dutton, J.C. (1989) Aerodynamics Torque Characteristics of Butterfly Valves in Compressible Flow. ASME Journal of Fluids Engineering, 111, 392-399.
http://dx.doi.org/10.1115/1.3243658
[4] Park, S.W. and Lee, S.W. (2000) Three-Dimensional Flow Characteristics in the Downstream Region of a ButterflyType Valve Used in Air-Conditioning System. KSME Journal B, 24, 260-269.
[5] Barton, N.A. (2003) Erosion in Elbow in Hydrocarbon Production System: Review Document. Health & Safety Executive: Research Report 115.
[6] EPRI (1998) Application Guide for Motor-Operated Valves in Nuclear Power Plant. EPRI TR-106563-V2.
[7] Danbon, F. and Solliec, C. (2000) Aerodynamic Torque of a Butterfly Valve: Influence of an Elbow on the Time-Mean and Instantaneous Aerodynamic Torque. ASME Journal of Fluids Engineering, 122, 337-377.
http://dx.doi.org/10.1115/1.483262