I noticed the other day the pressure gauge on my RO unit was registering pressure when it shouldn't have been, all the reservoirs were full. I shut the lines off just before the reservoir floats but it didn't make any difference. I decided to ignore the reading which probably turned out to be a mistake. Tonight I went down to the basement to discover water on the back floor. Followed the trail of water from the floor drain back and of course it was coming from the RO unit. The dang line into the back of the pressure gauge, which is a solid connection, was snapped off and I had water merrily spraying out all over the top of the RO unit. Guess I'll be making a call for a new automatic shut off valve and pressure gauge in the morning. Like I said, dang it.