I use these from McMaster. They are designed for gases. I"ve been using these for over 2 years and have never had a leak. They also have a version with a check valve that is something like $6. I have my CO2 tank outside of my fridge with a disconnect also outside. When I want to purge kegs, or anything else, I can just diconnect it and move it anywhere.
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Even a slight leak will drain your bottle very quickly. I would stay away from air hose QD's. Walk through any auto shop and you can hear them leaking and hissing. I also wouldn't use rubber air hose for gas or beer. It would make your beer taste like the hose. Those spiral plastic hoses might work though. My guess is after you drained a couple tanks of gas in a week you would remove the QD's. Why not just use a manifold with a spare leg?
in my XP thoes conectors only leak if your connector arnt the same brand as your fitting...that or thay have had the sh!t beat out of them for long use and abuse
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The quick disconnects you are looking for, they are for Post regulator right? Because the Pre-regulator disconnects would have to be able to handle 1000PSI. I don't remember ever seeing this. I just wanted to make sure that you were talking about after regulator pressures.
I use the air tool fittings found at Lowes or wherever. I have no leak problems. I suspect the leaks in the shops are more about worn out o-rings from continued connect/disconnect over the course of many years.
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