obsolete 1-nitro-1,2-dihydro-1,3,5-triazine hydrolase activity (obsolete GO:0034565)
OBSOLETE. Catalysis of the reaction: 1-nitro-1,2-dihydro-1,3,5-triazine + 2 H2O = 1-nitro-1,3,5-triazinane-2,4-diol.