Asked in
Home & Garden
Home Improvement

How do you increase amount of water in a newly installed bladder pressure tank precharged to 38 psi 86 gal max drawdown 31 gal 30-50 psi on-off switch Tank seems to have no water in it after install?


User Avatar
Wiki User
January 08, 2015 12:35AM

The installer should have reduced the pressure in tank when fitting it. Tanks are commonly sent out with 38-45 PSI. It is up to the installer to adjust this. To increase the water capacity, reduce air from the top valve till it's about 28 psi with tank almost empty. Now adjust the pressure switch to turn ON at 30 PSI. The main screw on most pressure switches adjusts both low and high pressure points.

User Avatar
Wiki User
June 17, 2009 4:55PM
lower the psi in the bladder, or increase the pressure the pump puts out,