Viessmann 100 WB1C Expansion Vessel MPN 7837231 – Fits 26kW, 30kW, 35kW

Viessmann Boiler Expansion Vessel 7837231 – Fits 26kW, 30kW, 35kW Models. Part Numbers: 7837231. 100 WB1C 26kW Combi (Serial No. 7499425) – 47-819-20. 100 WB1C 26kW System (Serial No. 7499424) – 41-819-27.

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