Vaillant Expansion Vessel 10 Litre 181051 + PRV 178985, designed for various Vaillant boilers. Vaillant Boilers Ecotec Exclusive Series. · Ecotec Exclusive 832 VUW 32/4 – GC No. 47-044-37. · Ecotec Exclusive 835 VUW 356/5-7 – GC No. 47-044-66.
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