Amtrol hydronic expansion tanks are for use in closed, non-potable hydronic heating and chilled water systems. Available in diaphragm, full acceptance and partial acceptance bladder designs, all Extrol expansion tanks are made in the USA at our ISO 9001: 2008 registered facilities. ASME tanks meet all Section VIII, Division I standards.
- 12 psig factory precharged
- Industries thickest fixed butyl/EPDM diaphragm
- 1/2 in NPTF malleable iron center system connection
- Schrader valve with EPDM seat air valve