Potterton Promax Ultra Combi 24/28/33/40kW 8L Expansion Vessel 720753901 H90-535

Potterton Expansion Vessel 8 Litre 720753901. Part No.720753901. Potterton Promax Ultra Combi ErP 24 (GC No. 47-393-54). Potterton Promax Ultra Combi ErP 28 (GC No. 47-393-55). Potterton Promax Ultra Combi ErP 33 (GC No. 47-393-56).

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