Kitchen tap with aerator & different hot/cold pressures

Discussion in 'Plumbing and Central Heating' started by Chris Kirkman, 13 Nov 2013.

  1. Chris Kirkman

    Chris Kirkman

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    I want to replace my kitchen mixer tap with one that has a built in aerator or perlator to give a softer flow of water and looking at the Franke Sion which gives a "champagne-like water flow." My cold water is straight off the mains and hot is from an indirect supply with around 5.2 metres head so there is going to be some difference in pressures.

    The question I have not been able to find an answer to is whether this type of tap is suitable. I am assuming that an aerator has some flow restriction as well as mixing air in the water flow but does that mean that the higher pressure cold water could cause back flow in the hot water?

    Thanks for any advice.
    Chris
     
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  3. Madrab

    Madrab

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    Depends on how high a pressure differential there is but yes the cold could push it's way back up the hot if difference is significant. The tap is also a high pressure tap and 1/2 bar of hot water pressure may not be enough for it.
    Would need to contact Franke to confirm IMO
     
  4. Chris Kirkman

    Chris Kirkman

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    Thanks for thereply. Hadn't realised that the particular tap I was looking at was high pressure model, had concentrated on finding one with perlator. Had another look at their site and eventually found a page which detailed taps with info about suitabilty for low pressure and whether perlator included. Now thinking about the Moselle but will try phoning Franke tomorrow.
     
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