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.
PEX is an acronym for crosslinked polyethylene. It is a flexible, durable, corrosion-resistant product that possesses distinctive properties that make it ideal for radiant floor heating and plumbing systems. There are three different types of PEX tubing: PEX-a, PEX-b and PEX-c. Uponor manufactures PEX-a tubing, which is considered the superior type of PEX in the industry. Unlike traditional heating systems that just warm the air, radiant heating warms the floor and the objects in contact with the floor. The entire floor distributes a consistent, even and quiet heating.