Hi Greg, Could you specify ...

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Hi Greg,

Could you specify what does “making a water meter more accurate” mean? What kind of water meter do you have? Static/mechanical piston/velocity etc.?

The error curve of water meter may vary depending on the flowrate regime but it is not really related to pressure. If what you mean by back pressure is something that resulting water hammer, then it will damage the meter not making it more accurate. Moreover, you cannot have higher pressure on your outlet (downstream) of your water meter since it will cause a backflow.

If you mean the smart valve is a valve  with a controller that can adjust the flowrate by itself and able to mintain the flowrate in the optimal operating flowrate of your water meter, then it might help to get better measurement accuracy.