can i dead head my fuel lines to the banjo bolt?

since 2 fuel systems are best. can i run my separate fuel lines to a 4 way fitting, sorry, brain fart on the name, X fitting, instead of a T? i would put my check valves on the X fitting to minimize change over time and cross contamination. making sure this is as close to the banjo as possible. is there a fitting besides the stock fuel pump to utilize the banjo bolt?