Pumps, Power & Hose Networks

Exact class defaults, connection limits and community routing findings for the DrainSim power network.

Evidence: Game-file confirmed
Verified: 2026-07-28
Spoilers: Minor spoilers

File-confirmed defaults

Pump interaction

SourceForce = 1.0
Interaction overlap extent = [22, 6, 8]

Pump hose

VolumeSize = [1000, 1000, 1000]
Tooldistance = 27
ToolMaxRotation = 120
Length = 35
MaxLength = 35
Spline MeshLength = 102
Spline MaxDistance = 12

Power Cord

MeshLength = 200
MaxDistance = 12

Inflatable Barrier

Barrier MaxDistance = 5
Barrier MeshLength = 209
Barrier-hose MeshLength = 200
Barrier-hose MaxDistance = 15

All values are internal defaults. The guide does not convert them to metres.

Generator capacity

Generator I: two outlet components.
Generator Mk II: four outlet components.

The four-outlet Mk II structure matches the English in-game description.

Downtown Station boosters

Two BP_DrainBooster actors are placed in Downtown Station. The class default is:

Multiplier = 2.0

The files do not prove whether both boosters stack, share state or represent alternate activation points.

Community field technique: hose into drain

Players report that a discharge hose pointed into the centre of a compatible drain can reduce backsplash and remove output efficiently. The same reports describe the technique as finicky and inconsistent between drains, with no universal snap prompt.

Treat it as a sourced community technique. It is not a guaranteed connection mechanic.

Low-water troubleshooting

Multiple Steam bug reports describe pumps that appear to output more water than they remove when running in shallow water. This has not been directly reproduced by TKB in build 0.3.1.12.

Practical response:

Stop pumps that are blinking or operating in nearly dry water.
Let the region settle for several seconds.
Resume with the vacuum or squeegee.
Restart the pump only when it has a clear intake pool and a safe discharge route.