Amtrol Hydronic Expansion Tank

Amtrol Inc. designed and patented the first Extrol diaphragm expansion tank to control system pressure and help reduce energy consumption in heating systems.

  • Accepts expanded water as system temperature rises to reduce pressure build-up.
  • Factory pre-charge: 12 psig.
  • Maximum working pressure: 100 psig.
  • Maximum operating temperature: 240°F.



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