A Grate is used as a connector between a redpower fluid pipe system and liquid source blocks (Oil, lava, water, fuel.) It has to be placed near some type of fluid source blocks.
Grates can either remove fluid source blocks from the environment and put them into a connected fluid pipe or place fluid source blocks coming in through a connected fluid pipe in the environment.
In many situations you will need 2 grates; one to collect fluid and one to distribute it.
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