When we use water in our house like the shower, dishwasher, washing machine, the next time we use the water the pressure is very high for a few seconds. It is causing my hot water tanks pop off valve to open. We have to empty a bucket of water all the time because of this. This hot water heater has done this since we bought it. I have installed a new pressure regulator hoping it would help with this problem and with the fact that our water hose has low pressure. It didn’t fix either problem. It has been going on for years and I don’t know what to do to fix it. I am on city water and have a gas hot water heater. Any suggestions would be great!