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Controlling
the output of a mixer shower on a mains
pressure system presents a challenge.
Consider... the hot and the cold water both
emanate from the same supply, so when you
adjust your water temperature dial you mess
with the hot and cold pressures increasing
one as you reduce the other. Furthermore,
everything else that requires water in the
property feeds from the same supply, so when
another appliance (be it a toilet flushing,
a washing machine running, taps, hoses etc)
requires water the household system pressure
is affected which in turn affects the blend
of water in your shower valve. The result is
a fluctuation in temperature at the shower
head.
To cope with
this Mira produce what is known as a
'pressure balancing valve'. By balancing
the pressures of the incoming hot and cold
supplies the operator is given a fighting
chance of achieving a steady output
temperature. Please be aware though, a
pressure balancing valve only
balances pressure. Although this might sound
silly you must understand it does not take
into account variations in supply
temperature. If, for example the hot water
gets hotter or the cold gets colder then so
will the mix be affected.
For total
thermostatic control (where the valve makes
internal automatic adjustments to hold
output temperature stable) you should refer
to the Mira Thermostatic models to be found
here. |
