2 Litre Water Heater Expansion Vessel Kit (Kit A) And Bracket Alternative Expansion vessel with fixed membrane for domestic hot water systems Carbon steel body with white epoxy polyester paint finish and stainless steel flange Pre-charged to 4.1 bar Dimensions: Height 237mm x Diameter 125mm Max. system temperature: 99ºC Max. pressure of vessel: 10 bar Connection: 1/2