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  1. MUJ1299

    Dual rising mains

    Anybody know of a calculator that determines pump flow rates, velocities and head losses when using 2 rising mains of differing sizes? For example a Stage 1 140mm RM will be installed for a pump rate of 13 L/s and 7 years later an additional RM will be installed for up to 34 L/s mallowing...

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