Super_Paulie

very interesting, thanks Nick, thats what i'll do. In regards to the fish, hell yeah! the novelty wore off very quickly using buckets etc so i have a hot and cold feed that i mix with valves. Might get a TMV as an upgrade as the temperature always needs to be the same really. They double up as a syphon as well to drain the old tank water away via a pipe to a soak away outside and its an absolute lifesaver, can recommend.

further to this @Nickfromwales, if i take a 22mm all the way to the combi, what would be the benefits of that as apart from the CH everything else is in 15mm. Cheers gents.

thanks a lot @Nickfromwales, for your time and advice. Thats exactly why i joined the forum to get help from decent blokes like yourself. Im with you, the 2 additional manifolds in hindsight are pointless, i was just looking for a way to pull the plug on both at the same time which seems ludicrous thinking back as they both have their own isolation anyways... I can run a dedicated 22mm feed to the boiler no problem at all, as i say the whole house is fair game in its current state. This makes more sense?

anyone available for a sanity check on this setup? I ran a test on the time it took water to get down from the loft to the bunker and then back over to the kitchen and it wasnt a problem worth worrying about. This setup will have a secondary manifold at the kitchen side for cold otherwise the bunker just gets crazy crowded with pipes and it means i can bring each appliance online as and when its positioned, i dont know their final locations just yet so it just makes sense. Drain-offs so i can drain the system down from any of the lines by opening closing the manifold valves. Run to the kitchen tap from manifold is 7m so worth bringing down to 10mm? Without applying favouritism, @Nickfromwales seems the go-to man for manifolds but id love to hear any responses on this from anyone who has experience.

hi guys, does anyone have any experience with these? Reliance manifold. https://www.screwfix.com/p/reliance-valves-4-port-potable-water-manifold-15mm-x-3-4-/248ty Zero screwfix reviews suggests they are either very new or very average... the price point is a lot more friendly when compared to the Speedfit or Hep20 manifold when you need a shed load of them. Just weighing up whether it is better to build my own in copper-isolation valves or go down the pre-built route.

Got nothing to offer here, only that I proper enjoyed reading this thread (while at work). Passed the time great, your gaff must be colossal...!

is there any value in using 22mm to my cold water "satellite manifolds"/branch sections to the kitchen and upstairs/boiler rather than just do the lot in 15mm for neatness? Boiler is a 15mm input, mains is 25mm. Also i assume having the double checks at the actual outlet is better than having them at the beginning of the run directly underneath these lever valves? Cheers gents., image is in colour for eye candy.

am i better off asking questions in my own thread one after the other or starting off a new thread for each time i need advice? not sure on the etiquette here and i dont want to come across as a needy bastard.

youve got to have an open mind when on the internet @joe90... 🤪

think im just massively over-comlicating things for whatever reason, think a hybrid of branch and manifold might be the better way to go like you have there Johnmo.

the more i press buttons the more complicated this thing gets...

yeah, the 2 hots (and colds) going that way are 1xh&c for the fish tank and the other 2 are outside of the building for car/dog washing. Obviously i can "tee" these nearer the source but i was hoping to avoid any of that stuff. There seems to be a lot of ways to do business but it always ends up with "tees" here and there or hot manifolds at one place and cold the other which makes me think that the whole manifold and jointless pipe runs is just a bit silly in my situation. What you have above is close to what i had originally designed with a hot manifold in the kitchen and the cold in the bunker. If i need to add branches in here and there then its not far off that already so i might be chasing a solution to a problem that doesnt really exist. its annoying as the bathroom manifolds are like 2m away from the bunker but you cant get through the staircase to join the 2. Im thinking that the wait time for hot water in the kitchen might not be a huge burden as i barely use it anyways, its the hot in the bathroom that needs the quick response so maybe im over-thinking this... seen too many pictures online of nice manifolds and wanted a piece of the action.

i could, but i was under the impression that it is better without any joints outside of the manifolds Open to all suggestions though, so like this?

ideally yeah, but sadly i cant get from the bathroom to the bunker "easily". The downstairs is all open plan and no matter how i jig it i cant get an easy route from bathroom to bunker, hence the long way round via the kitchen. Sorry that isnt clear from the diagram, its not as straightforward as it seems in terms of house layout. Essentially the bunker is only accessible from the kitchen lets say.

i hear what youre saying, so like this. Would involve "an upstairs manifold" but that wouldnt be a huge burden in the scheme of things.

hello gentlemen. Im in the middle of a full house reno. Well a big extension which has basically wrecked every room so may as well be. It seems a good opportunity to re-do all the plumbing and replace the decades of branches, dead legs, all types of fittings etc and go for something straightforward with minimal joins from A to B and manifolds seem to fit the bill. Not a lot online really and almost all searches end up here so i thought id join in. By manifold i mean copper tees with full bore lever valves and double checks. The situation is "Boiler in loft - Mains downstairs." I really wanted a central point of isolation for everything, or most things at least so keeping joints to a bare minimum but it has created a few issues. Under the stairs is a bunker that is ideal to house it all but the problem is that the DHW will have to come down from the loft (via the spare room, straight down the outside of the defunct chimney breast) bypassing the bathroom (next room along), straight past the kitchen to the manifold location and then back again to the kitchen and back up again to the bathroom. Common sense suggests this is silly, with a distance around 20/25m in total before hot water gets to the tap which is in reality nearest the boiler. So begs the question do i have a manifold upstairs to split the DWH to the bathroom and kitchen. And if im doing that then i may as well but a manifold in the kitchen as well. And if thats the case then i may as well sack off the manifold in the bunker altogether which was the entire point of it... Before this post gets too long, should i just abandon the whole idea, its been working fine as a branch system for decades... Attached image, fish is not to scale. Nothing is off the table, the house is in a almost complete reno mode.

have i joined the right forum... 😆

i'll have to take your word for that...!

Hi guys. Use the forum a lot as a voyeur until now! In the middle of a 4m 2 storey side extension and 2m rear extension, builder worked to shell and the rest is on me... At the stage of plumbing now so hoping to get a few good answers from the residents here. From my internet searches I always end up here for my answers!