So, this all started with a simply water heater replacement. My parent’s 70-year-old home has an open water system; they never had a water pressure regulator. I’ve learned a lot since posting about a “vacuum relief valve”. My Dad’s a tad set in his ways, “We’ve lived all these years without all that fancy stuff, why do we need it now”.

I picked up a cheap watts screw on pressure gauge; the instructions say if it’s above 60 psi you need a prv. Their house reads a hair over 100psi. I guess I have to battle with Dad a little

I can hear them now “My shower was fine till you messed with it”.