Zilmet ZHT105 27.7 Gal Cal Pro Hyrdronic Expansion Tank 3/4″ NPT Connection

Supporting larger hydronic systems, the ZHT105 expansion tank absorbs pressure fluctuations caused by water heating cycles, protecting boilers, pumps, and valves from stress. The 27.7-gallon capacity accommodates multi-zone or high-volume systems, while the carbon-steel shell provides exceptional structural strength. A pre-charged diaphragm maintains stable operation and long-term reliability under constant cycling. Ideal for commercial or heavy-duty residential applications.