Hi everyone, I need help identifying the pipe type in the attached picture. It's a plastic or PEX type which is lined on the outside which what appears to be an insulated metal casing. The OD is slightly larger than an equivalent PEX pipe therefore the PEX connectors I'm using will not fit. I have this type of piping going from my well to my tank. In addition there are some sections of this piping going from my tank to my sediment filter. I can probably remove the shorter peices completely how ever I have a 1 inch feed coming from my well pump to the tank which I cannot replace so I need to find a connector that will adapt from this pipe to regular PEX Any ideas?