The main theorem of this paper provides partial results on some major open problems in graph theory, such as Tutteʼs 3-flow conjecture (from the 1970s) that every 4-edge connected graph admits a nowhere-zero 3-flow, the conjecture of Jaeger, Linial, Payan and Tarsi (1992) that every 5-edge-connected graph is Z3-connected, Jaegerʼs circular flow conjecture (1984) that for every odd natural number k⩾3, every (2k−2)-edge-connected graph has a modulo k -orientation, etc.