YAPH wrote:
On Thu, 28 May 2009 00:08:50 +0100, Michael Kilpatrick wrote:


Yes, it's all a load of tosh if you ask me. A bidet is a "category 5"
fluid risk


because basically you could crap[1] into the bidet pan and it'd be
equivalent to a fresh, potable water supply pipe, shared with the
neighbours's drinking water taps, submerged in your khazi.


... and for some reason a double check valve is not sufficient.
You have to have an air gap e.g. cistern with ball cock valve. Or
something called a type DC pipe interrupter, but I'm not really sure
about those when attached to a bidet.


Loadsamoney, but probably in the Reliance Water Controls catalogue.


Absolute twaddle, it really is!


Maybe not if you're the neighbour whose drinking water tap is on the same
supply as your bidet/khazi.

I know peoples' gas boilers can explode. I know houses can catch fire
(I've seen it happen in front of me). I know radiators can leak and ruin
a carpet or worse.

The thing is, I've never heard of anyone who has experienced, or indeed
has ever told me of anybody else who has experienced, backsiphonage
through the water mains.

Furthermore, whilst I might occasionally leave a tap running in a
basin, it's rather a different matter to leave an ascending spray bidet
running inadvertently and unattended, which is when a risk of
backsiphone might be present.

Michael





[1] or more politely, and realistically, faecal matter could get into it.