Right: With you. My parents in law's bath has a similar problem with
mains fed cold and tank fed hot. With the hot tap on at full the usable
range of the cold tap to go from freezing to scalding is about 1 degree
of rotational movement.
Where are we going and why am I in this handbasket?
Reading this thread a little amused that anything that may be a
little unusual? in the UK i.e. anything someone has seen on this
side of the pond is automatically "American"! (OK; with Canada
having only a tenth of the US population in a much larger land
area, we'll settle for 'North American') ;-).
In this part of Canada such 'sprayers' are not uncommon. The
kitchen of one of our daughters has one, the other not. In this
house the original mixer taps came with a sprayer hose but I
never installed it. See b).
Speaking as a d-i-yer; there seems to be two main types.
a) is a type of shower head that is normally part of the spout
over the kitchen sink/s but it is removable and can be moved
around in order to rinse/spray off dishes etc. With these you
adjust the water to the temperature and flow you want, the usual
way, using either the mixer handle or the individual cold/hot
taps, pull the 'shower head' off the spout and go to it!
b) More common is a type where an extra hose, often about three
eighths outside diameter, either rubber/plastic or covered with
that chrome 'slinky' material, comes from the bottom of the taps
up through an extra aperture, usually to the right of the
They seem to work, in most cases, again by setting the water
pressure and temp and then operating a trigger handle on the
sprayer head/nozzle whereupon the water automatically diverts
through an extra (diverter) valve installed in the base of the
taps assembly (A divil to get at by the look of it?)!
One reason they may be unsuitable, IMHO, is that a third extra
'plumbing' hole is needed through the edge of a typical ss sink
unit or it may be an extra hole through counter top itself and
thus require a decorative waterproof bushing which sometimes come
with the faucet assembly. You may need to cut this extra one
yourself; some sinks come with three holes. (Well! Plus the 4th
'drain' hole in the bottom! Just in case someone quicker in mind
than I, points that out.))
We have since replaced, twice in about 33 years, our original
mixer valve, opting for the simplicity (and lower cost!) of
separate taps. Am therefore thankful we did not cut that third
hole and install the extra hose. I have seen a 'blank' installed
in such a third but now unused hole in the edge of a ss sink; it
must have to be a tight fit and be also of non rusting material!
Concerning water pressure:
Another reason we did not originally install our 'spray hose' was
that we then had a well and electric pump pressure system. With
such systems the pressure varies from around 20lbs/sq.inch,
cut-in to around 40 at cut out. That pressure would probably be
too low to get effective spraying? Today we are on a municipal
system with estimated pressures of around 30 to 60 lbs/sq.inch.
(2 to 4 Bar?) With this our neighbours diverter valves
(Venturis?) seem to work OK. From time to time do seem to detect
concerns about UK water pressures? Gravity systems; still? I
recall a great big *slabs of slate) water tank in the roof of a
100+ year old house in Liverpool where we had a flat up to the
late 1950s. I guess it's long gone now?
BTW again in our current bath/shower replacement we have opted
for individual hot/cold taps rather than a mixer.
Hope this is of interest. Our d-i-y motto is KISS. Keep it simple
....... etc. Terry.
Gravity systems are still around in many existing installations. The
majority of new installs are mains pressure systems, but gravity systems are
still being fitted, either because of poor water connections, or ignorance.
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