block-overflow-gate

The Overflow Gate is a Serpulo-exclusive transport block introduced in Mindustry to manage item throughput by enforcing a cap on how many items can pass consecutively. It functions as a gate in conveyor networks that allows items to flow but stops additional items once its internal consecutive-pass limit is reached, then resumes when the condition clears. The block is primarily used to prevent bursts of material from overwhelming downstream processors or to shape item flow timing in compact factory designs.

Designers added the Overflow Gate in version 4.0; later changes in version 6.0 removed an unspecified hard item limit and established a concrete maximum consecutive limit of 2. This means the gate will permit at most two items to pass in a row before blocking further items until the queue state changes (for example, downstream consumption or removal frees capacity).

Practical notes and usage:

• Place the Overflow Gate where you need to cap short bursts of items without fully stopping flow; it’s useful ahead of fragile buildings or where smoothing input prevents jams.
• Because the consecutive limit is small (max 2), use multiple gates in series or pair with junctions and sorters if you need larger or more complex shaping behavior.
• The block belongs to Serpulo-exclusive content and functions as part of the transport block family; treat it similarly to other gates when planning routing and timing.
• If precise timing or buffering is required, combine the Overflow Gate with small buffers (like conveyors into a compact storage) and mechanical sequencing so downstream consumption clears the gate and allows the next batch through.

Given limited published details about exact mechanics beyond the consecutive-pass cap and its version history, test placements in your factory to observe interactions with specific buildings and item sizes.