| Brand | Zilmet |
| MPN | ZHT18-30 |
| Model | ZHT18-30 |
| Compatible Brand | Zilmet |
| Item Height | 16.000 |
| Item Length | 12.000 |
| Item Thickness | 12.000 |
| Item Width | 12.000 |
| UPC | 8019855039860 |
The Zilmet ZHT18-30 Cal Pro Expansion Tank supports hydronic heating systems with a 4.8-gallon capacity and 1/2" NPT connection. Crafted from high-grade carbon steel, it provides consistent pressure regulation and system protection for residential or light commercial setups.