Re: Water pressure too high after using hot water
Okay so now we know your PRV is not a one way valve but you do have a dual check at your meter so you should have an expansion tank (sound familiar?) for thermal expansion. I don't see anything with the new filter or your water heater which should be causing problems.
Now depending on how much further you really want to go with this you need to get us those pressures. However, if you are ready to accept the advise to date and call it a day install the new T&P and the expansion tank which we already know you need and hopefully your problem is solved.
Keep us posted-Mark
"Somewhere a Village is Missing Twelve Idiots!" - Casey Anthony
I never lost a cent on the jobs I didn't get!