I can't find a good reference for this. Does anyone know what PEX tubing is rated for so far as water pressure is concerned?
At my house I have a pretty varied range of water pressures, talking to my neighbor who happens to work for the water district, he indicates that we get about from 30 to 75 psi from our lines depending upon the time of day. Considering the dramatic increase in water pressure after replacing my hot water lines, I can only imagine what it would be like once the cold water lines are replaced (it's all galvanized).
I know pressure reducers and pressure regulators can be installed, but it seems like 80 psi is the breaking point for that type of installation - although I've heard that high water pressure can wear out fixtures faster, and my neighbors have had that experience.