Live and learn,good luck,better for you now than in an emergency .The "dope" (me) framed in a half bath in that corner of the basement and said PRV is above the ceiling. I tried running the adjustment to both ends and can adjust the "running" pressure but as soon as I turn the tap off the pressure returns to 100 psi. The regulator has connectors on both end but I am going to cut an access panel in that ceiling to ease access in the future as the main shutoff, PRV, and an outside faucet shutoff are all located up there and it's a pain to get to them. I routinely shut off the faucets in the colder months.
Sent from my iPad using Tapatalk Pro


