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I went to a job today where a client wants 3 bathrooms all with baths and massive 10 inch shower heads. One of the bathrooms is on the 4th floor. He has 3 bar pressure constant when running all taps, and flow rate goes down to 9 litres a minute in top shower and bath with all basins and kitchen sink running. His mains pipe is 25mm. He has 210 megaflow which ideally should be 250 to 300. But I said he should try with 210 as highly unlikely everyone would use all at same time. Obviously the mains is limiting the flow rate, so would a 35 mm main do any better.
Thanks guys
Thanks guys