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  1. hosec

    Orifice plate sizing

    Are you able to advise the size of an orifice plate that will be fitted into a fire hydrant main to give a pressure drop, (when 1 hydrant is running at full bore) from 180 psi to 55psi. The main is Thin Wall Stainless Steel line with an internal diameter of 150mm, and a fire hydrant connection...

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