Hi all, Have been stalking these and other forums but no joy on my issue so perhaps you can help!? Currently building new ensuite, planning on manifold water plumbing and so was planning on taking 22mm hot and cold speedfit pipe from boiler room to ensuite room, to then meet valved manifold such as: http://www.screwfix.com/p/jg-speedfit-jgman2-2-way-modular-manifold-brass-x-15mm/93655 - So far so good, problem is I understand these take 22mm feed and split to 15mm outlets, problem is shouldn't a bath be fed 22mm? Haven't quite decided on shower but will 15mm be okay for that? - We have a thermal store which will have mains pressure hot water through a plate heat exchanger, will that mean pressure wise we can get away with 15mm for bath as i understand combi boilers allow? - Also to plumb to a shower, we are planning to get this one: http://www.lightinthebox.com/antiqu...-8-inch-shower-head-hand-shower_p237078.html# should I change to copper before the shower and plumb to this shower bracket: http://www.screwfix.com/p/h-c-contemporary-bar-valve-fixing-kit-chrome-effect/76919 or something like this: http://www.screwfix.com/p/jg-speedfit-15wbp-wall-plate-elbows-15x1-2/17692 Any thoughts/ advice on better alternative greatly appreciated, for instances soldering up custom manifold in copper tees with valves instead? cheers.
Not sure what the benefit of the manifold is but, an end feed 'T' and a couple of valves would cost about 30% of that. You need to find the fitting instructions for the shower, To see what it needs to connect to. Some just need a stub of copper pipe to stick out the wall. Aqualisa supply a plastic template for you to position the pipes for first fix but, Other manufacturers may have different requirements.
As you're at mains pressure 15mm will be fine for the hot and cold to the bath, shower and basin. personally, I would just use reducing tees for each take off (ie 22mm in, 22mm out and a 15mm branch) although it's always nice to be able to isolate the shower so your hideously expensive manifold might help there. Generally shower valves have 150mm or 6" centres so you need to check your particular valve. Avoid the wall plate connector route if you can as you have to get them at the correct centres and flat, the bar valve fixing kit is worth every penny (but check centres first)
many thanks, have checked these and the shower seems to be 150 centres. noted on manifold , it is ridiculously expensive! Will go tees route instead, cheers.
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