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Discuss Can water flow rate be measured at the supply pipework? in the DIY Plumbing Forum area at PlumbersForums.net

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My tap is a "Perlator sink tap (p-ix 501 ib" and I get a very substantial increase in hot flow rate from 5.1 LPM to 6.6 LPM (29%) when I remove the very fine aerator/filter, the hot flows through the centre of the spout and the cold around this central core, don't know if you can get a more free flowing "spout" or not but maybe worth looking into because 6.6 LPM at 70C will give ~ 13 LPM at 40C from cold at 10C which should be sufficient for most purposes. The highest flow I see in the attached Franke file is 6 LPM (hot), from a "Moselle".
I think I actually have this moselle tap with the perlator swivel aerator.
 

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