In my basement the pressure release valve, right where the water comes in the house, gave way. Started spraying water all over the place.
I immediately shut off the water with the cut off directly below the pressure valve. That stopped the spray, but water was still running at about a gallon every 10 minutes. I opened a tap in the basement and one outside. But water was still running. Called plumber. He said that PRV was gone, and it looked as if my shut off was gone/leaking too.
He instructed me to turn off water at the street, and he would be here tomorrow to replace PRV and add a secondary shut off.
The next day, plumber shows up replaces PRV and adds new shutoff above the PRV.
He then tells me there was nothing wrong with my original shutoff.
I asked him, why then did he add a new shutoff, if mine was already working, and why did he add it above the PRV? What possible use could that server.
He told me that with the two shutoffs, I could isolate my PRV.
Is that something I would ever need to do? Did plumber do me a favor by making my situation better, or did he sell me a $150 useless shutoff just to make a buck?
Thanks
Bob