4.4 gal. Expansion Tank



The EXTROL EX-30 Expansion Tank is pre-pressurized and features a diaphragm design. This expansion tank is designed for use with a hydronic heating system. It accepts expanded water as system temperature rises to reduce pressure build up.

  • Factory pre-charge: 12 psig
  • Maximum working pressure: 100 psi
  • Maximum operating temperature: 240 degree F
  • Water tight reservoir for expanded water


Assembled Depth (in.) 11 in Product Depth (in.) 11.5
Assembled Height (in.) 16 in Product Height (in.) 16.5
Assembled Width (in.) 11 in Product Width (in.) 11.5
Finish gray Product Weight (lb.) 8 lb
Finish Family Gray Returnable 90-Day


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