Q: " I have had a combination boiler installed, but my plumber tells me
that I have to have an electric shower. Is this the best type of
shower that I can have ?"
A: A combination boiler, as well as direct water heaters, provide different
pressures on the hot and cold water supplies, but can provide a very
powerful shower if the correct type of shower valve is used. There
are two types of shower valves which are suitable for this type of
water system, the first being a thermostatic valve and the second being
a pressure equalising valve. The advantage of a thermostatic valve is
that most have a seperate water flow control, which allows the setting
of the water temperature to be left in a set position, while the shower
is turned on and off.

Q: " I have insufficient head of water from my cold water header tank
to give a suitable shower. Do I have to have an electric shower?"
A: An electric is only one solution and it provides the least effective
shower. Two other types of showers are the Trevi Boost and a
pumped shower. The Trevi Boost shower valve uses your mains
cold water supply to harness the pressure to increase the strength of
your hot water flow by means of the Venturi Principle. This gives
the performance of a power shower, without the use of a pump.
In order to provide this performance, the Trevi Boost valve
requires a mains water supply of at least 1.5bar pressure, a
hot water supply of at least 65degreesC and a hot water head
between -0.5metres minimum and 3.0 metres maximum.
The second option of installing a pumped shower will give a
similar performance to the Trevi Boost, but may require the addition
of a 'negative head switch' in order to turn on the pump, if the
bottom of the cold water header tank is below the position of
the shower head.

Q: " I want to have a powerful shower installed over my bath, but I
I cannot find a bath screen which is unlikely to prevent some
leakage of water onto my floor. Is there any type of bath
screen that can fully fold away, yet can be used with a
powerful shower?"
A: Yes, the Showerplus range of baths and fold away shower enclosures
by Selecta are suitable for any type of shower valve. The Showerplus
baths have a moulded shoulder which ensure that no water can leak
onto the bathroom floor.
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