Make a single outlet regulator into a dual outlet reguator with this Y-fitting. Remove the shutoff from a regulator, add thread tape and screw the y fitting in tightly, then thread in two regulator outlet valves, D1120. You can now shut off 2 gas lines independently from one another to protect from leaks and cross contamination. 1/4MPT x 1/4FPT x 1/4FPT