Altecnic Sealed Heating System, the vessels are utilised to accommodate expansion caused by heated water inside the system. When the water cools, the expanded volume of water pulls back toward the intake as it expands in volume as it pushes against the diaphragm in the vessel as the water temperature rises.

• Test pressure is 1.5 x max working pressure
• Max vessel operating temperature is 70C
• Factory pre-charge is 1.5 bar
• 5 Years Warranty
• Powder epoxy coating