PRESSURE TANK NOT FILLING

[Michael Oakley]

HEY.!
I’m a licensed plumber and an A book Steam Fitter, with zero well experience.
All of a sudden water pressure drops to a trickle. I knew I needed to replace old rusted out shallow well pump. After replacing pump I still have the same problem. Well tank is light and raising bladder cut out has no effect. Pump runs constantly, can’t find any water leaks, when I shut ball vale off after filters before well tank pump shuts at 35-40 psi. When I relese pressure it drops and continuously round again.
Need expert well system help.

 

[LLigetfa]

First off, the pressure switch should be at the tank Tee. Second, there should not be any filters before the pressure tank. If there is a shut-off after the tank turn that off. My guess is you have a leak you have yet to find.

 

[Sponsor]

 

[Valveman]

Probably have a 20/40 pressure switch, so shutting off at 40 sounds right. Open the valve and the pressure drops off and the pump comes on, means water is going somewhere. Something is leaking.