"I bought this vessel to replace a failed expansion vessel in an aging combi boiler of one of my customers. It performed exactly as it should at time of installation and I have no reason to think it wont continue to do so for some time. My only disappointment with this item was that it was more expensive than at some other shed / catalog retailers and didn't include a hanging bracket which had to be purchased separately. The one I purchased was grey and not intended for potable water and had a 3/4" parallel bsp male thread to couple on too. As the internal expansion vessel I was replacing was only 6 litres in capacity this 8 litre will more than cope with the expansion in the heating circuit."
"I have used these 8l vessels before and they are quite good, but they used to be the more convenient 1/2" BSPP, now they are 3/4" which as written above requires a reducer for most applications, Screwfix do not sell reducers in female."