Experimental and theoretical studies of pumps of irrigation pumping stations Oleg Glovatskiy, Rustam Ergashev, Jaloliddin Rashidov, Naira Nasyrova and Boybek Kholbutaev E3S Web Conf., 263 (2021) 02030 Published online: 28 May 2021 DOI: 10.1051/e3sconf/202126302030