This is a cross post from SFF. I'm hoping someone can give me some pointers. I want to use some quick release fittings on my next build. Looking at QD3’s from Koolance and my wallet started crying if I want to buy new. I started looking around and found these that are available locally for around half the price. https://www.flowfitonline.com/hydra...-set-14-bsp-dn04-iso-63-400-bar-rated-12-lmin These are designed with high pressure systems, but I would assume (and hence the open question) that they could also be used for low pressure systems like a watercooling loop? I have been scratching my head trying to compare them to the QD3 fittings reviewed here: http://thermalbench.com/2016/05/22/koolance-quick-disconnect-fittings/3/ The data sheet has values in BAR and LPM for the connectors and I think they are better (less restrictive), but I could be mistaken. Thoughts?