Ratings and Reviews for  181051 Vaillant Ecotec Plus 831 Expansion Vessel

Note this is not a Vaillant branded part but a Zilmet branded part - the product description does not make this point clear although I understand this product was an OEM part on older Vaillant boilers. It needs to be clear as Zilmet branded vessels can be purchased for less then Vaillant stamped vessel's.