Expansion Tanks

Our 2½ gallon expansion tank is a rubber bladder filled expansion chamber designed for use on antifreeze based fire sprinkler systems. The expansion chamber regulates pressure caused by thermal expansion and contraction within the closed system.

  • UL Listed 
  • Compatible with both propylene glycol and glycerin based antifreeze
  • Suitable for NPFA 13, 13D, and 13R Systems
  • 2½ Gallon total Volume
  • Stainless Steel Construction
  • 1" NPT Supply Connection