Any benefit in running a 22mm 'backbone' with 15mm spurs to endpoints?
Theoretically this seems to give a higher overall capacity but I don't know if this is necessary for normal use for basins, toilets. etc.
Cheers
Dave R
Cold mains supply round the house
Sep 03, 2012
9 Replies
Personally I'd look at it the other way around, "any reason not to"? If the cost difference is not great (and I've not done plumbing for a while so apologies if it is), over capacity seems a reasonable aim - doesn't guarantee future proof but perhaps puts off obsolescence a little.
Paul DS
Having just replaced a cold water loft tank, CH expansion tank in loft, and plumbed in a digital mixer shower - I discovered that (at Screwfix, and also at B&Q) 22mm copper pipe is £19.99 for 3m. 15mm copper pipe is £9.99 for 3m. Whether that's the cheapest you'll get I don't know (think it gets to £14.99 for 3m if you buy 30m at Screwfix!), but after discovering this price difference, I quite happily plumbed the last 6m to the shower (3m of cold pipe, 3m of hot pipe) in 22mm SpeedFit.
I was surprised at the cost of 22mm copper pipe!
D
Costs about double with copper tube.
David WE Roberts :
Doesn't that mean that you'd have to run off more before you can get a glass of *cold* water?
And what is wrong with bottled water from the fridge:-)
Especially with added hops...
Owain
What is wrong with 96% water from the fridge:-)?
it's only 4% alcohol?
Owain
Not even that. There are other things in a decent brew than water and ethanol.
Andy
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