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**Note: The HydroClaw Expansion Tank Support Bracket provides a safe and reliable option if you prefer to mount your expansion tank. This expansion tank bracket is easy to install and will hold any tank with a diameter of 11" nominal.

The Amtrol 30 EXTROL Expansion Tank is designed to be installed in residential and commercial applications and it factory pre-charged to 12 PSIG. Though this expansion tank can be mounted horizontally this can cause a decrease in the products life.

  • For use with closed hydronic heating and cooling systems
  • Factory pre-charged to 12 psig
  • Pre-charge should be adjusted to equal minimum operating pressure at tank location
  • Accepts expanded water as system temperature rises to reduce pressure build-up.
  • System connection sets the point of no pressure change
  • Water-tight reservoir for expanded water
  • Sealed air cushion - factory pre-charged and 100% tested
  • Deep-drawn steel tank
  • Air stem for pre-charge adjustment
Read more
Tank Volume:
4.4 Gallons
5-Year Limited Warranty
Diameter (Inches):
Height (Inches):
Max Accepted Volume:
2.5 Gallons
Max Pressure (PSI):
Thread Type:
Max Temp (F):
Precharged PSI:
12 psi
Thread Size:
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