Dutch_12078 wrote:
Our current coach doesn't have the hot/cold shower problem to any significant degree, but our previous coach did. I solved it in that one by installing check valves in each line right at the faucet set. That eliminated any chance of one line over pressuring the other.
Interesting. When my shower head drips, it drips cold water which must be the higher pressure. Odd when you think that hot water expands, so it must have more pressure, but the hot water line may actually be cooling while at rest so that would equate to LESS pressure.