Re: [OT]Shower Pumps

["Neil Fuller" <neil@xxxxxxxxxxxxxxxxx>]

Richard

We are sloooowwwly moving to fully pressurised systems but the vast
majority
of domestic cold water services (and HWS for that matter) are gravity fed.

Cistern in the attick (normally 50 gallons or so capacity) supplies the
rest
of the house. When the level drops, it is refilled via the ball valve from
the mains.

The HWS is also gravity fed by putting cold water from the cistern in to
the
bottom of the calorifier. The hot water is drawn off of the top.

The main reason for this is to prevent any back syphonage in to the mains
water. With modern Double Check Valves, this can be prevented. Also,
"pulling" water from a low pressure main (mine drops to about 1.7
bar in the
summer) can cause problems for other users such as complete loss of water
flow.

Cheers

Neil
----- Original Message -----
From: "Richard Malcolm-Smith" <rich@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Friday, April 02, 2004 8:00 AM
Subject: Re: [ukha_d] [OT]Shower Pumps


Neil Fuller wrote:

> I've installed lots of Stuart Turners and never had a call back on
them.
>
> They are noisy but no worse than other makes. You can put them on
> antivibration mounts and use flexible connections but they do still
make a
> noise.
>
> Personally, I have an ST Monsoon 3 bar twin impellor pump. It works
very
> well with two showers, although there is a slight but noticible drop
in
> pressure when the second shower is turned on.
>
> It is important to use a good quality shower in this application
otherwise
> you may find temperature instability a problem - Expect to pay upwards
of
> £200 for the shower mixer alone!
>
> As this is rather OT (unless you are going to automate it in some way
-
and
> the inbuilt flow switches dont count!), then probably reply off list
if I
> can be of any further help.

Ive never heard of a shower pump till now, do you guys in the UK have
problems
with low water pressure or something? Even people here with tank water here
just
have a pump that pressureises the whole plumbing system to a normal
pressure
so
a specific one for a shower seems overkill... unless you want to drive a
pressurewasher nozzle off it.. ;)


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