Wastewater collection systems frequently use submersible pumps. However, the model needs a link to connect the suction side of the pump to a node (usually a wet well). The pressure solver in the GVF-convex solver needs a suction pipe (pressure pipe) connecting the pump to a suction node (a wet well for submersible pumps). To simulate a submersible pump, the user should connect the wet well to the pump with a short pipe to move the water into the pump with negligible head loss. It can even be a virtual conduit. In the GVF-convex solver, this pipe must be a pressure pipe while in the other solvers it can be a pressure pipe or conduit. If the user plans to switch between solvers, it is bet to make it a pressure pipe.

The Elevation (Invert) for the submersible pump should be the low point of the pump inlet.