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In InfoWorks WS PRO is possible to simulate FMV valves, but I would like to introduce a "deviation" option to better simulate it. I give an example: imagine a valve whose pressure setting is 2 Bar if flow is from 0 to 10 L/s, and 2.5 Bar if flow is from 10 to 20 L/s. I would like to introduce the possibility to add a "flow deviation" parameter to avoid unexpected opening/closing when flow is close to 10 L/s. For example, we could set deviation at 0.5 L/s, so that pressure will remain 2 bar up to 10.5 L/s when growing, while it will remain 2.5 Bar up to 9.5 L/s when descending. An additional (and useful) setting would be about time: there should be the possibility to set a "time deviation" parameter too, so that the pressure setting doesn't change, unless the flow is above (if growing) or under (if descending) the target for the selected time.
