Hey so I've been in my home a little over a year and been meaning to put in a PRV. I have street pressure of 80 lbs and I think it spikes sometimes to 90 or so. I left a pressure gauge with the needle that shows the maximum pressure it reached on a hose bib overnight. I dont have much room to do it in the street so I plan to do it where it enters the home. I drew up a sketch with a bypass in case it needs to be changed in the future. One question I had is if I need a BFP when installing a PRV; can it function alone? I already have the expansion tank for the hot water heater installed. Am I missing anything? What is a good pressure to set the PRV to? Any recommendation for a brand of PRV? Thanks