The CAL-PRO expansion vessels absorb the water volume variations in closed heating systems maintaining constant pressure, helping to reduce energy consumption Painted externally with long-lasting epoxy polyester Pre charged and 100% factory tested Supplied as a kit to reduce fitting time Manufacturer Stock Code:ZKITA075.1 EAN Code:5055143732047 Weight:0.973 kg Sub-Category:Expansion Vessels Made to Order:No Brand:Zilmet Manufacturer Part Number:ZKITA075.1 Warranty:5 Years Capacity:170 L EAN Number:5055143747010 Category:Cylinders Type:Heating