Click the Pump Curve button to open the Pump Curve Editor window.

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To view or edit Pump Curve data, click the button next to the Collection.

Pumps are essential links designed to elevate water to higher elevations. Each pump is characterized by a pump curve, which outlines the relationship between the pump’s flow rate and conditions at its inlet and outlet nodes. There are five distinct types of pumps supported:

Type 1: An off-line pump with a wet well, where flow increases incrementally as wet well volume becomes available.

Type 2: An in-line pump where flow increases incrementally with the depth of the inlet node.

Type 3: An in-line pump where flow continuously varies with the head difference between the inlet and outlet nodes.

Type 4: A variable-speed in-line pump where flow continuously changes with the depth of the inlet node.

Type 5: A variable-speed version of the Type 3 pump, where the head versus flow curve shifts position based on the pump’s speed setting.

Additionally, there is an “Ideal” pump, which serves as a transfer pump with a flow rate equal to the inflow rate at its inlet node. No curve is required for this pump. However, it must be the only outflow link from its inlet node and is primarily used for preliminary design purposes.

Pump operation can be dynamically controlled by specifying startup and shutoff water depths at the inlet node or through user-defined Control Rules. These rules can also simulate variable-speed drives that modulate pump flow.

The key input parameters for a pump include:

  • Names of the inlet and outlet nodes
  • Its pump curve (or “*” for an Ideal pump)
  • Initial on/off status
  • Startup and shutoff depths (optional)