RE: [OT] Showers

["Stuart Whyte" <lists@xxxxxxx>]

> > Hi All,
> >
> > I have got a problem with my Shower/immersion heater, and all
> the plumbers I
> > have phoned have never heard of a system like mine.
> >
> > I have uploaded an image here:
> >
> > http://www.futureflat.org/images/showerimage.jpg
> >
> > Red = Hot water
> > Blue = Cold water
> >
> > The hot and cold feeds near the center are for the shower.  The
> cold is a
> > mains pressure feed, and the hot goes to the shower.  Only the
> hot isn't hot
> > :-(  It stays hot for about 30 seconds, then just runs cold.
> Its DEFIANTLY
> > a problem at this end, cause the "hot" pipe feels cold
when the
> shower is
> > running.
> >
>
> Sounds like a problem with the mixer tap allowing the higher
> pressure cold
> water to flow back up the hot pipe. If you turn the shower to
> 100% hot, does it
> then get warm?

Yes, even with the shower at 100% its still cold.
>
> Could be a non-return valve scaled up or jammed open, possibly even
back
> pressure cased by a blocked shower head.

Where would this valve be??  At the mixer end??

Cheers

S.


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EARLY BIRD RATE EXPIRES 31/12/03!
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