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.
Volume119.5 gallons
Drawdown 20-4044.2 gallons
Drawdown 30-5037.0 gallons
Drawdown 40-6032.3 gallons
Connection Size1-1/4 NPT (F)
Approx. Shipping Weight160 lbs