Liquid Vent quick facts
- Deposits Water supplied by a connected Pipe
- Only its central 2×2 area actually outputs
- Stops once water reaches the 3rd layer of its 4×4 area
- Multiple Pumps raise output up to a limit
Fluid transport
Sandustry Liquid Vent: The Outlet That Releases Your Water
The Liquid Vent is the far end of a fluid line. When a Pump sends liquid down a Pipe, the Vent is where that liquid re-enters the world — releasing it from the Vent's own tile so it can pool, flow, or feed a machine.
Pipe → Water out
Central 2×2 output
Multiple Pumps scale it
Official wiki numbers
Verified against v0.5.5 on 2026-08-20
Official source
Deposit Water, Step by Step
The Vent looks like a passive outlet, but its output zone and its cutoff decide whether your water actually arrives. Check each as you bring a line online.
Feed the Vent from a Pump
A Vent does nothing without a Pipe behind it and a Pump at the source. Put the Pump in liquid, run the Pipe to the Vent, and the line is ready to release.
Checkpoint: the Pipe connects a working Pump to the Vent.
Keep the middle 2×2 clear
The Vent covers a 4-by-4 tile, but only its central 2-by-2 squares deposit Water. Block the lower three of its four vertical layers with anything and the outlet stops entirely.
Checkpoint: the center of the Vent opens cleanly and water pools below it.
Watch the cutoff layer
Once the Water level — or any other obstruction — reaches the third layer of the Vent's 4-by-4 footprint, the Vent stops emitting. Keep the pool below that line.
Checkpoint: the water stays below the third layer and keeps flowing.
Scale flow with more Pumps
Several Pumps can feed a single Vent, and each extra Pump raises the total output — but only up to a ceiling. Past that point, adding Pumps no longer helps one Vent.
Checkpoint: output rises, then stops rising as the Vent tops out.
When the Vent Stalls
A Vent that stops releasing is almost always one of three conditions, and each has a direct fix.
Output backs up through the Pipe
When liquid fills the lower layers of the Vent's footprint, the outlet simply waits — a backed-up pool can make the whole Pipe network look dead. Drain or route the pool below the cutoff.
The middle 2×2 is covered
Only the central 2-by-2 squares release. Anything covering the lower three vertical layers kills the outlet, so clear the footprint and the Vent resumes.
Adding Pumps no longer helps
One Vent can only deposit so fast. For sustained high flow, spread the load across more Vents instead of endlessly stacking Pumps on a single one.