The installation of a pump tank has never been this easy. The A. O. Smith MDX-52 is very flexible in terms of installation and it will give you plenty of trouble-free service for years to come.

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.
Volume52 gallons
Drawdown 20-4019.2 gallons
Drawdown 30-5016.1 gallons
Drawdown 40-6014.0 gallons
Connection Size1-1/4 NPT (F)
Approx. Shipping Weight77 lbs