10.17028/rd.lboro.7688756.v1 Glenda McMahon Glenda McMahon Ken Chatterton Ken Chatterton Ball-valve tap Loughborough University 2019 WEDC Water for low-income communities Technical Taps Types of tap International and Development Communication 2019-02-20 17:06:21 Figure https://repository.lboro.ac.uk/articles/figure/Ball-valve_tap/7688756 Ball-valve tap