In article , BigWallop wrote:
Yes ! The answer would be to fit Central Heating Pumps to both your hot
and cold supply pipes to lift the pressure in the whole system and not just
to the showers.

Don't you need bronze pumps in this situation?

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Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk
Free SEDBUK boiler database browser http://www.sda.co.uk/qsedbuk.htm