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I've got a pressure reducing valve with an integrated check valve and pressure relief valve which has a connection point for an expansion vessel but the plumber hasn't fitted one. There is about 2m of plastic pipe between this and the new storage combi. Will the pressure relief valve save...

We're looking to have one of these installed and have had a couple of quotes. One plumber suggests using 22mm from the DHW outlet (stepped up) as this will help with the flow when using more than one outlet. The other says that as the boiler has a 15mm outlet that 15mm will be fine and...

I've been reading conflicting thoughts on the placement of an unvented cylinder. Is it best to place it close to the mains incomer and boiler or closer to the bathrooms? I have an existing airing cupboard which is quite close to the bathrooms that could house the cylinder or I could position...

Hi all, Any advice would be greatly appreciated! Bit of background: House has an unknown size feed pipe but at the house stopcock end it is 20mm MDPE as a water meter has been fitted. The water main is 100mm Ductile Iron which runs in the footpath outside the house. There is a boundary box...