Most of the regulations from the Obama administration working their way through the courts raise an issue concerning Chevron deference. The Supreme Court has before it a case, Esquivel-Quintana v. Sessions, raising the question whether Chevron deference trumps the rule of lenity in criminal cases. Auer deference has also come under attack in recent years. As with Chevron, in some circumstances the Court has declined to apply Auer deference altogether. Christopher v. SmithKline Beecham Corp., 132 S.Ct. 2156 (2012). In other cases, individual Justices have argued that it is time to reconsider Auer deference.
Brickeyee is on the point. ALL PEX piping uses some sort of Barb fitting with a compression ring. I have never ever heard of a single failure with this type system. Compression fittings use a ferrule either brass or plastic. The brass ferrule bites into the pipe wall, but the plastic ferrule does not. It is not a surprise to me that a Compression fitting which has a plastic ferrule failed.
Connecting PEX to a water heater? Can PEX be connected directly to a water heater or should use a flex connector or a short length of copper be used first. I have seen it done both ways but wonder if there is a code issue or manufacturers recommendation. Advertisement.