![]() ![]() P9 Parshall flume P9 in a rectangular shaft - concrete Hydraulic Conditions for Parshall Flumesįor correct function of the Parshall flume the conditions of flow in the upstream and downstream are crucial. Maximum size of suspended solids is limited to 80% of the throat width (d max = 0,8*W). In flows carrying sediments, it is recommended to carry out the inspection and maintenance more often. It is recommended to clean the flume and a connecting pipe between the flume and the manhole at least once a year. Moreover, Parshall flume can stand up well the solutions of inorganic salts, acids and bases that do not exhibit strong oxidation properties, and most of organic solvents. The flume is resistant to air temperatures up to 80 ☌, however, water inside the flume must not get frozen.
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