I am looking to re-route my upstairs/downstairs cold water and hot water supplies. My ideal route, which has plenty of width, does not have the necessary depth to take a 15mm pipe without channelling out brick work. Therefore, is it possible to run 2 x 8mm pipes in place of a single 15mm pipe without any loss to water pressure/flow? The hot water is gravity fed where, of course, the cold water will be at mains pressure.
2 x 8mm in place of 15mm
- Thread starter DazEddy
- Start date
Cross sectional area of 1 x 15mm = 177 sqmm
Cross sectional area of 2 x 8mm = 100 sqmm
Plus, as has been said, extra flow loses with the 8mm pipes.
You'd need far more than just 2 of them to perform the same as a single 15mm.
Cross sectional area of 2 x 8mm = 100 sqmm
Plus, as has been said, extra flow loses with the 8mm pipes.
You'd need far more than just 2 of them to perform the same as a single 15mm.
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