Expansion Vessel and Check Valve for Aqa Heaters

Expansion vessel and check valve for Aquaheat installations where expanded water cannot be accommodated in the pipework, and where the mains pressure is guaranteed never to exceed 4.1 bar. The expansion vessel, when fully charged, will absorb all expanded water produced by the Aquaheat heater Supplied pre-charged to 4.1 bar The non-return valve prevents back-flow of hot water which could cause cross-contamination of the inlet water Connections, expansion vessel, BSP male and non-return valve 15mm x 15mm compression