Gutierrez, D.A., Garcia-Bravo, J.M., Reid, A.L., Newell, B.A., McPherson, P. and French, M. 2020. Design and Modelling of a 90-Degree Ball Valve with a Linear Pressure Drop. International Journal of Fluid Power. 21, 1 (Mar. 2020), 1–26. DOI:https://doi.org/10.13052/ijfp1439-9776.2111.