Flo-Tec pressure tank....

[mrcaptainbob]

Exactly! Very important. And since the switch is almost exact at 40/60, I have the (empty) tank pressure at 38. This is the same as what I had with the first tank and it's second bladder. It just lost the air in a very short amount of time. The tech guy I last spoke with explained to me on how the barometric pressure was responsible for the pressure loss through the valve assembly. Right or wrong, I now have a new tank and it appears to not be as affected by the barometer as the last tank was...I'm thinking there's a better quality valve assembly on this one. Hence, the comment about it being under pressure even at the store. In any event, I will be closely monitoring this for the rest of the year for any evidence of premature loss of air pressure.