the county where I live put in the "check valve" or backflow device. Not sure, but I know they said you need to get a thermal expansion tank or the pressure could blow up the water heater.
I spoke to a plumber, talked to other pros, and they said it wouldn't immediately make my water heater go bad. One of the plumbers even said the pressure valve may or may not work and is something the State has done to get more money by people spending cash to get valves, new water heaters, etc. One guy said it depends on the psi to my tank, but I have no idea what the psi to my house is.
I just want to know if my water heater is going to die immediately or if I might have a little time to get the money together.
Thanks. I know no one can tell me for sure, just getting advice.
edit: why the heck did this get a down-vote?