"Benjamin Aldred" wrote in message
...

"Clive" wrote in message
...
is it possible to add a pump to increase waterpressure & flow? similar
to
a
shower pump for the whole house?



If your system is tank fed Clive, then yes it is possible to supply a pump
from the cold water outlet of it. The only thing about doing this, is
that
you'll need a switching device to energise the pump only when you are
demanding water from the tank, because a pump running continually would
soon
burn out if it doesn't have a water to dissipate a bit of the heat away.

It is not advisable to try and supply a pump with water directly from your
mains water supply, as this will not be possible to differentiate an
effective pressure coefficient between the supply inlet and the pump
outlet
without some kind of restriction valve(s) which is kind of defeating the
purpose of the pump.

If you are thinking of going down this road, then I'd also advise you to
make sure the tank is appropriately sized so as not to run dry due to the
increase in draw off by the pump demand, and also that you select a pump
with a compressor type impeller rather than just a paddle pattern, as this
will prevent any sudden pressure loss in the system by back flow when a
tap
is turned off and the switching deactivates the pump.

Many hotels I maintain have installed larger tanks and pumped water
systems
to help stop people complaining about not getting a proper shower at high
demand times when everyone else is taking a shower. The principle is
feasible, but it can be expensive on the initial outlay for the proper
equipment.

tank = cold water tank.
cylinder = hot water cylinder.


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