For the life.of me

I have 67 Amazon returns of WRONG connectors.If anyone can tell me what I need (besides a beer) to make this happen. This is my mockup of what has to happen. AFTER I finished my graphic illustaton, I realized that I didn’t want to do CO2 but a LIQUID OUT, but took a pic of whatever was closest to my hand.

hey, im not exactly sure what you mean but i can assume youre saying it doesn’t thread on or doesnt thread on well?

it looks like you have a little nylon washer on the end of the male part of the quick disconnect, which is good.

fill me in on more details - but it looks like you have that tube going into a tube fitting there? maybe it works, but mine goes from left to right connections laid out like your pic:

male threaded Quick disconnect end (can’t remember size/threadcount) > equivalent nut fitted over barbed tip (that you attach the hose to). then after i will attach the hose