Do Zilmet expansion vessels and heat exchangers carry the UKCA marking?

Yes, in accordance with the Pressure Equipment (Safety) Regulation, expansion vessels and heat exchangers, whose product between the maximum operating pressure and the volume is greater than 50 bar per litre, must bear the UKCA marking on the identification label. Expansion vessels and heat exchangers, whose product between the maximum operating pressure and volume is less than or equal to 50 bar per litre, cannot bear the UKCA marking on the identification label and are designed and built according to correct construction practice.