Pumps
Default ON for booster / direct city suction. Turn OFF for tank-only suction.
This syncs with your System Demand Estimator when available.
Town Main Test (Supply Curve)
Supply curve uses a standard hydrant-test relationship (Hazen–Williams style exponent 1.85).
Tank Suction (Static Head)
For vented tanks, suction pressure is based on elevation head at the pump (minus suction losses).