Design aspects of operation of water supply facilities of pumping stations Naira Nasyrova, Oleg Glovatsky, Rustam Ergashev, Jaloliddin Rashidov and Boybek Kholbutaev E3S Web Conf., 274 (2021) 03008 Published online: 18 June 2021 DOI: 10.1051/e3sconf/202127403008