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Cold mains supply to a mixer power shower??

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Postby ECRyder » Sat Jan 14, 2012 2:51 pm

I live in a bungalow and want to install a power shower with the hot supply only pumped separately, and with cold supply to the mixer valve coming from the rising mains (rather than from a cold storage tank). Can I do it and does it work??
Thank you
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Postby plumbbob » Sun Jan 15, 2012 5:08 pm

ECRyder wrote: Can I do it and does it work??


Very few models of mixer shower will allow unbalanced feed pressures. Personally, I avoid them anyway because of the increased risk of scalding.

There are several other negative reasons for not using unbalanced feeds so avoid it if at all possible.
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Postby Dick Puller » Sun Jan 22, 2012 4:26 pm

You could use an equalizer for this, but as said it's not wise to supply a shower valve with unbalanced pressures or flow rates.
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