Hello Zaman, Can you share some details of the pump curve? Or any error messages you might be getting which shows its not working as expected? As my colleague pointed out before in DDA analysis the demands are always satisfied regardless of the nodal pressure but in PDD analysis (PDA), the demands change as per the nodal pressures. It might be possible that the pump curve might be insufficient to cover a range of pressure and flow fluctuations. You can try expanding the pump curve to include more points. See if that helps. It would be a good idea to share your model files via the link provided in the earlier response.
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