Heatrae Sadia Pack U2 Water Heater Expansion Vessel [PACK U2 HEATRAE]The Expansion Vessel, when fully charged, will absorb all expanded water produced by the Multipoint heater during normal operation. The Check Valve prevents backflow of hot water and eliminates any possibility of cross-contamination between cold and hot water. The Expansion Valve, which opens at 6 bar (87 psi), acts as a back-up to the expansion vessel.
Heatrae Sadia Pack U2 Water Heater Expansion Vessel [PACK U2 HEATRAE]
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