hi

my kitchen sink is up for replacement (someone previous tenant
obviously stood on it and dented it so it doesn't drain properly, ie
it's always collecting little puddles of dregs)

while changing over the sink, i want to take the opportunity to change
the taps to cross-top. also, with the current dual-flow spout, nobody
here likes the way you get a stream of water coming out that is ice
cold on one side and scalding on the other, so i'd like to install a
single-flow mixer (with the appropriate plumbing modifications
underneath)

unfortunately it seems like most of the standard stuff seems only to
be made in dual-flow...

the extra problem is that i only have about 180mm of clearance above
the sink, otherwise the spout will get in the way of opening the
window.

the Bristan crosstop deck sink mixer chrome (i think model id is: X
DSM C) would be good enough for me (vertical height c.150mm), but it's
dual-flow. i contacted Bristan but it seems they don't have anything
similar in single-flow. and the end of the spout is squarish profile,
and there's no screw thread, so no opportunity to fit some kind of
mixing gizmo on the front end.

likewise i contacted Pegler too, but they don't seem to have anything
suitable

so... does anyone know where i can get a suitable (spout height
180mm) crosstop deck sink mixer chrome in single flow... or some
alternative solutions...

looking forward to your suggestions!
thanks
james

unfortunately it seems like most of the standard stuff seems only to
be made in dual-flow...

That is for 2 reasons.

Firstly, it allows mixed pressure supplies, which are very common in the UK
with cold mains water and gravity fed hot water.

Secondly, as the main drinking water tap, it prevents contamination from the
hot water (which may have been sitting around in a tank filled with dead
rats and sparrows).

Christian.

"Christian McArdle" wrote in message .net...
unfortunately it seems like most of the standard stuff seems only to
be made in dual-flow...

That is for 2 reasons.

Firstly, it allows mixed pressure supplies, which are very common in the UK
with cold mains water and gravity fed hot water.

Secondly, as the main drinking water tap, it prevents contamination from the
hot water (which may have been sitting around in a tank filled with dead
rats and sparrows).

Christian.

yes, but i thought that these concerns could be dealt with by suitable
modifications under the sink, so allowing a single-flow to be
fitted...?

james

Firstly, it allows mixed pressure supplies, which are very common in
the UK with cold mains water and gravity fed hot water.

Secondly, as the main drinking water tap, it prevents contamination
from the hot water (which may have been sitting around in a tank
filled with dead rats and sparrows).

yes, but i thought that these concerns could be dealt with by suitable
modifications under the sink, so allowing a single-flow to be
fitted...?

Well, part 1 can be dealt with by a pressure balancing valve. However, this
will reduce the cold pressure to the poor lowest common denominator, the
gravity hot.

Part 2 can't be dealt with, although it can be mitigated by taking a long
run of cold before using the water. If you've got skanky gravity fed hot, it
is going to contaminate the cold supply in the internal mixing chamber.
Obviously, you probably won't get ill, unless you really do have a dead rat,
or leggionaires disease in the tank

Basically, unless I had mains pressured and fed hot water in the kitchen
(which as it happens I do), I wouldn't attempt to find a internal chambered
mixer tap. My selecting a good design, you'll find external mixers arent so
bad. It is the cheap horrible ones which have two streams which don't
actually mix mid air.

Christian.

"Christian McArdle" wrote in message .net...
Well, part 1 can be dealt with by a pressure balancing valve. However, this
will reduce the cold pressure to the poor lowest common denominator, the
gravity hot.

hmmm, i think you just persuaded me not to bother with that plan!

selecting a good design, you'll find external mixers arent so
bad. It is the cheap horrible ones which have two streams which don't
actually mix mid air.

so back to the question of which model to choose - and how to find out
if it is a good design from the mixing point of view - any
recommendations...?
(bearing in mind that only 180mm vertical clearance, and cross-top
taps preferred)

thanks,
james

so back to the question of which model to choose - and how to find out
if it is a good design from the mixing point of view - any
recommendations...?

A good start is to look at the spout and make sure the outlets are
concentric rather than adjacent. The hot should come out of the centre and
the cold comes from a surrounding ring.

Christian.

so back to the question of which model to choose - and how to find out
if it is a good design from the mixing point of view - any
recommendations...?

A good start is to look at the spout and make sure the outlets are
concentric rather than adjacent. The hot should come out of the centre and
the cold comes from a surrounding ring.

thanks again for this advice

i tried looking around for something like this in a suitable model,
but couldn't find - can you recommend a source, ideally in the UK...?!