For my co2 closed transfer setup, I was expecting to be able to screw those 2 items together (male to female): https://www.ontariobeerkegs.com/Stainless_Steel_Flared_Union_1_4_MFL_x_1_4_MFL_p/ss-1-4-m-mfl-x-1-4-m-mfl.htm
But the adapter (1/4 MFL to 1/4 MFL) is too big to fit the 1/4 FFL to barb.
Why? Shouldn't 1/4 MFL fit properly 1/4 FFL? Do I miss something here?
Thanks in advance.