Recent content by Rogplumb

Yes, I have been . Purchased a brand new 0.5" valve yesterday on Ebay. Seller told me he had two 0.25" on the shelf last month. The Vaillants I usually fit are 91.1% efficient (net). They will now be able to get through the winter and replace the boiler in the Spring. Am interested in...

Of course the sizes you give are both the nominal pipe od. The wall thickness of 22mm copper tube is 0.9mm (taken from the BS) and that of 22mm Hep2O pipe is in excess of 2mm (measured by eye only). You do not give the wall thickness of your pipe, but plainly it will be substantially more than...

Please can anyone find me a mercury vapour valve to repair a Mk1 Potterton Netaheat 10-16? This elderly appliance - fitted by me in June 1975 - was the UK's first successful automatic boiler that didn't burn a permanent pilot. These mercury vapour valves were manufactured in Birmingham UK by...