Add pipe connectors to your pipework equipment part families to define pipe or culvert ports.
Pipe connectors are added to pipework equipment part families so that they can align with related pipe networks. Once you add pipe connectors to a parametric shape model, directional arrows are displayed on the shape. The pipe connectors will be displayed as green arrows when they positioned correctly; invalid pipe connectors will display as red arrows.
Infrastructure Part Shape Utilities
Pipe Connector.

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Be careful to also specify the proper direction for the pipe connector(s) you add. You can click Change Direction
or Flip Direction
to modify the design direction for your pipe connectors.