Jadnashua
Retired Defense Industry Engineer xxx
Does the house pressure change when you change the PRV adjustments? If it say rose from 40psi to 55 as you adjusted, but didn't go further, it may be okay...but if it was at 55 when you started, and didn't change, then either the supply is at 55, or the prv is bad. Sometimes, it nice to have a pressure gauge, or a port where you can check it, both before and after the PRV.