In a diaphragm well pressure tank ($300 to $800), a vinyl or rubber barrier (that is, diaphragm) separates the water and the air. As water enters the tank, the diaphragm expands upward and thus ...

It’s fine for a DIYer to adjust their water pressure regulator. These devices usually have an adjustable diaphragm that the user can tweak with a bolt on top of the unit. Turning the bolt ...