VAILLANT ECOTEC PLUS VUW 824 831 837 EXPANSION VESSEL 181051

arrived on time, fitted and boiler working well

Great price, straight swap with new washer and came next day. Quicker than the merchants.

This is not a genuine Vaillant part but is made by the company that supply Vaillant (Zilnet) so is OE quality at a fraction of the price. A pressure vessel from Vaillant would retail at around £100 so this offers great value. Fits perfectly as well.

Does the job but the threaded Inlet spigot is slightly longer than the original, making it difficult to mate it with the fixed inlet pipe. With patience and a thinner fibre washer than that supplied, it does fit. I don’t know if other suppliers parts suffer from the same problem but it does work, hence the 4 stars

As described being the right one for the boiler make and model. Very good price and delivery next day.

Product was as expected, easy to fit by our boiler engineer and more than half the price of one brought from an official site, in fact it was exactly the same as the faulty one that was removed.

Good product arrived promptly

Reasonably priced. it fitted well and looked good quality