If you're searching for a pump tank that has very good stability, then the A. O. Smith MDX-119 is the best choice for you. Its rotating corrosion-resistant base is one of the many excellent features of this product.
Made in the USA.
It has a convenient air charge valve
Butyl Diaphragm ensures permanent separation of air and water.
Steel retaining ring seals the diaphragm directly to tank shell.
2-coat polymer water-side lining, bonded to shell which is a proven protection against rust.
Rotating corrosion-resistant base assures stability. Rotates for easy alignment to connection.
Slotted and notched for proper airflow, reduced condensation.