donb114
May 4, 2011, 12:06 PM
what is the air value on top of the tank for? Can you add more pressure (air) to the tank... and get more pressure out?
smoothy
May 4, 2011, 01:04 PM
Its used to adjust volume of the bladder inside the tank. Its not for adjusting the water pressure.
jlisenbe
May 4, 2011, 06:18 PM
The pressure at the top of the tank should be set to 2# BELOW the cut in pressure for the pump. For instance, if the pump cuts on at 30#, then you would set the pressure at the top of the tank to 28#. Do this with the system off and pressure drained to zero.
Once set, don't change it. It is, as Smoothy pointed out, not there to adjust system pressure.