My pal has a cottage with downstairs bathroom, h/w tank in the bathroom, fed from a c/w storage tank in the roof. Height, from the floor of the bathroom to the base of the c/w tank is about 16-17 feet. No knowlege about the pipe sizes.
Could he get a reasonable shower without a pump?
Thanks,
Tony Williams wrote in news: snipped-for-privacy@ledelec.demon.co.uk:
How many storeys? If it's a two storey cottage then yeah it should be OK if it's plumbed in 22mm pipe.
Bet the cold is mains pressure which'll make mixing a bugger. I gave up and fitted an electric shower myself which was a lot cheaper than a suitable mixer valve.
Rich
Depends on your expectations to an extent. If the head is 16 foot to the bathroom floor, it is only going to be 10 foot at best to the shower head (or about 1/3rd of a bar in pressure). It is possible with large diameter pipes, straight runs, and suitable shower valve and shower head to get a functioning shower with that sort of pressure. You would obviously need to take a dedicated cold feed from the cistern for the shower as well since mixing with mains pressure cold is not likely to work well.
When we had a gravity fed system, that was probably the sort of head it had - and it worked just fine in the sense of providing plenty of flow rate. However there was not that much pressure behind it - so if you like the "I am just about to flay you alive" sensation you can get from some showers you may be disappointed!
But slightly less flow than being pi**ed on by a dog?
He's ok there.... no mains, well water pumped up to the tank in the roof.
Thanks,
I don't think he'd expect much. When the water comes from your own well you live in a permanent "water conservation mode".
Looks as though it could be on. Thanks.
You should have fitted a venturi shower, which takes a cold mains supply and a low pressure hot supply. Electric? Madness.
I would tend to go for No. 3.
[snip] 1 or 3 I think, 1 being the easier.
I was a little brief.... the well water is pumped up to a large underground reservoir, up the hill, which then feeds back to the c/w tank in the attic. The head at the entry to the c/w tank is probably about another 10-15ft or so. Large dia polythene piping and there is a fearsome pressure/flow rate directly from the reservoir back to ground level..... as we found out when fiddling with the pump, and some silly B uncoupled one of the pipes by accident. It wasn't me. :-))))
Checked for potability at regular intervals.
You can buy mixers with the power shower pump integral in the unit. So, no expensive space taking external pump.
Sorted. You have about 1 bar of cold water pressure from the potable cold water supply. A venturi "may" do it, depending on the pressure range of the cold - see makers blurb.
Personally I would get rid of the tank in the house as I don't see the need when you have a constant pressure tank giving around constant ~1 bar further up the hill. I would go for an instant hot water system, as in a combi (LPG?, assuming no gas mains here), or a thermal store/heat bank. Then 1 bar pressure on "all" taps and easy to fix mixers on all basins as equal pressure on both. Then a nice high constant flow on all outlets in the house.
At around 1 bar an LP shower mixer would do nicely. Most have a max pressure of around 1 to 1.5 bar. Again check the Triton site for LP models. Others do them as well.
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