Hello Paul, If you want to enter a lump-sum headloss for each pump to model the headloss in its internal piping, you could enter it as a minor loss coefficient on the downstream pipe (composite minor loss coefficient - representing all of the individual losses), or if you want to enter a specific head drop, you could use the PBV or GPV element. Or, you could adjust the head values on the pump curve. If the headloss is relatively small, you could also consider neglecting it. See more details in the following article from our Wiki: Modeling pump station components like inlet wall, screen chamber and inner piping losses
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