Best quality threaded disconnects?

[Omega]

I have one light grey (as I understand, it is for gas) and several black disconnects that I use to transfer beer from fermenter to kegs and from kegs to serve. Couple of black disconnects are leaking, I do't know why. I guess I should simply replace them as they seem not to expensive, but would like to buy some good quality that won't leak. Is there a difference in quality between disconnects? I might have bought them from two different suppliers and all black disconnects seem to look the same, so I cannot differentiate by looking at them
I regularly connect and disconnect kegs and serving gun in case disconnect start leaking
And can I use grey disconnect to transfer beer? Will it last?
Thank you

 

[Larse]

I think a lot of the problems with leaking disconnects are from either o-rings on posts needing some maintenance/replacement or the disconnect itself needing lubrication. I notice one of mine (gas) is getting a bit sticky, so a squirt of silicon oil in there probably needed.

I find the duotight ones to be very good, if none of the above apply to you. Very positive and easy to install/remove. They're not threaded though. Just push on.

 

[Omega]

As I understand, I need food grade lubricating spray. I see the Malt Miller have them, guess will order from them along with disconnect

 

[MashBag]

Vaseline or olive oil works equally well.

One the subject of the quality disconnects the stainless steel strippable ones are awesome.

https://www.themaltmiller.co.uk/pro...m_campaign=21839064682&utm_term=&gad_source=1