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  1. damtom

    Combi boiler - minimum pressure and flow ?

    Hello. Just recently had replaced mains water supply pipe , from lead pipe to 25mm mdpe. It is 3 storey building. On third floor i am getting static pressure of 1.9- 2.0 bar. Once tap is fully opened pressure drops to 0.9-1.0bar but flow is quite high as it is over-filling my weir cup which is...