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