Primo Pumps & Fire Equipment
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 Detailed Description
  • 3/4" MNPT Fitting
  • Permanent Air Charge
  • Butyl Diaphragm
  • Drawn Steel Tanks
  • In-Line Installation with or without Air Vent & Separator
DuraMAC Expansion Tanks are designed for the specific purpose of accommodating the natural expansion of water in a household water system. To eliminate the water logging that is trouble-some but normal in a plain steel expansion tank, the air and water within the tank is permanently separated by a butyl diaphragm.

Many of today's water systems require backflow prevention. This seals off the system and requires the use of an expansion tank, or the relief valve can discharge on every heating cycle. DuraMAC Expansion Tanks eliminate wasting water and provide a smooth operating system. With a unique lining on the water side, you are assured long trouble-free service.