If the PRV is beore the water meter, and it has failed, will you replace it? Both myself and SprinklerGuy #1 had this happen recently and told them no, find a plumber. I know my customer was a little irritated that we wouldn't. We could have as there was a ball valve, then PRV, then water meter, then a nother ball valve. But if it is before the water meter I always tell them call a plumber or their water district. If it's after, usually will replace it. Funny thing was it happened on Thursday, and my tech that was there called his brother who is a master plumber. He said he would do it Saturday, but that wasn't fast enough for the guy, even though it's been raining every afternoon. Come on Tony, tell your good story about this.