How to Move Fluids with Part Exporter Fluid and Part Importer Fluid
Attaching to tanks and machines
Place a Part Exporter Fluid on the block holding the fluid you want to drain. Place a Part Importer Fluid on the block you want to fill. Each part must be attached to a fluid-capable block. Open the part interface after placing it to confirm the connection.
Setting the destination
In the Part Exporter Fluid interface, select the Part Importer Fluid as the destination. The exporter pulls fluid from its attached tank and the importer deposits it into its own. Flow continues until the source empties or the destination fills. When several destinations are needed, route through a Part Interface Fluid so one exporter can feed multiple importers.
Restricting the fluid type
Place a Part Interface Filter Fluid in the path to limit which fluid is transferred. Only the fluid matching the filter passes. This prevents unwanted fluids from entering a destination tank when the source holds a mixture.
Troubleshooting
If no fluid moves, check that the exporter is attached to a block that actually contains fluid and the importer is attached to a block that can accept it. Confirm both parts share the same channel. A correctly linked pair transfers fluid automatically with no further input.