Water pressure reducing valve

We have a rather elaborate system for our well. The water pressure reducing valve is under the MASCONTROL box and the pressure gauge is at the top. Thankfully G knows how the system works - I don't have a clue!  There are timers that have to be reset whenever the power goes off and other maintenance that has to be kept up regularly, and G does most of that.  If we run into problems,  we're lucky to have a well and certified water treatment specialist living just down the road, and the service has been excellent.  We've always been very conscious of our water usage, even when we lived in towns and cities, never take it for granted.  I often think what a luxury it is to turn on a tap and have reliable water flow freely and to have a hot shower or bath whenever I want.