This is my 2nd keezer build and this go around I’m using all MFL fittings on CO2 lines and beer lines. Do I need nylon washers on the beer lines too?
I think you only need nylon washers on steel to steel MFLs. The QDs I have already have a plastic end, so they don’t need the nylon washer. Metal to metal will leak without.
Excellent point. I will put them on the metal to metal connections.