I'm having some very weird issues with the water pressure in my house.
When nothing is running, the pressure reads 110 PSI. Obviously I want this to be lower.
When the toilet is flushed, the pressure crawls to 10PSI. Same thing happens when the bathtub is on. At this point, sinks quit working.
When only a sink is on, it goes to 100PSI.
No matter what, when all the water turns off, it jumps back to 110PSI.
Why is this happening? Is it normal for a pressure reducing valve to read a very high pressure when nothing is running?