10.17028/rd.lboro.7959221.v1 Glenda McMahon Glenda McMahon Ken Chatterton Ken Chatterton Piston pumps Loughborough University 2019 WEDC Pumps Technical Diagram Wells International and Development Communication 2019-04-30 11:36:44 Figure https://repository.lboro.ac.uk/articles/figure/Piston_pumps/7959221 Piston pumps