A mistake was made by the company managing the restoration of our basement. They told the plumbers to remove the Pressure Reducing Valve for unknown reasons. They replaced it with a simple ball valve. I came home late at night and noticed our water pressure was very high. I put a rain bird gauge on our frost free faucet and the pressure was 140 psi! I turned off the main water supply and demanded they come back and re-install the pressure reducing valve. My question is how much damage could be done to our plumbing/water heater by the pressure being that high for a day?