On 27/01/13 07:51, Vic wrote:

This property is on the top of a hill and the pressure here is always low.
All nearby houses are the same. Pipes are all plastic, so no corrosion and
there is no scaling. This is just the way it is. Previous shower unit could
just aout cope, but was always borderline.

There is a mains supply booster pump on the market. Bit pricey
(300ukp-ish IIRC) but legit: it has some smarts in it that restrict the
flow rate to mumble - whatever the permitted figure is.
Can't remember offhand who makes it: don't think it was Grundfos - might
have been Wilo. Prolly saw it in one of Roger Bisby's comics wot you get
in PMs.

John Stumbles wrote:

There is a mains supply booster pump on the market. Bit pricey
(300ukp-ish IIRC) but legit: it has some smarts in it that restrict the
flow rate to mumble - whatever the permitted figure is.

Isn't the point that you mustn't suck the mains, so the flow rate
is irrelevant?

Chris
--
Chris J Dixon Nottingham UK


Plant amazing Acers.

On Sun, 27 Jan 2013 23:52:22 +0000, John Stumbles wrote:

There is a mains supply booster pump on the market. Bit pricey
(300ukp-ish IIRC) but legit: it has some smarts in it that restrict the
flow rate to mumble - whatever the permitted figure is.
Can't remember offhand who makes it: don't think it was Grundfos - might
have been Wilo. Prolly saw it in one of Roger Bisby's comics wot you get
in PMs.

Our daughter had to have one of these fitted to her flat in
London where the mains pressure was too low and the indirect
supply also poor due to it being a top story flat. She
couldn't use a conventional shower pump due to the latest
design central heating/hot water boiler not liking being
"sucked" by a pump.

As a start, following a Google search, See:

http://www.pumpexpress.co.uk/pump_ex...e_boosting.htm

It pressurises the whole system and, when the controller
detects a pressure drop, the pump starts. This makes for
interesting tap experiences for those not expecting the
sudden increase in pressure :-)

--
John W