Atmospheric Realism

Atmos Realism

Atmos Realism gives atmospheric machinery physical pressure limits and adds mechanical valves for more interesting pipe engineering, without replacing Stationeers' gas simulation.

Why change atmospherics?

Pumps, vents and processors should not be able to generate unlimited pressure differences. This mod limits the pressure a machine can develop above its input pressure, so compressors have a practical ceiling while players still need to design sensible pressure stages, relief paths and automated controls.

Default maximum pressure differences

• Volume Pump 10 MPa
• Turbo Volume Pump 40 MPa
• Gas Mixer 5 MPa
• Advanced Furnace 40 MPa
• Active Vent 5 MPa
• Powered Vent 10 MPa
• Industrial Burner 5 MPa

These are pressure differences, not absolute output-pressure caps. For example, a 10 MPa pump receiving gas at 2 MPa can theoretically build up to around 12 MPa at its output. Flow slows as a pump approaches its differential limit and stops slightly before reaching it. Pump electricity use is unchanged: use IC10 or logic to turn idle machinery off.

Six new mechanical valves

All six are buildable from the Valve Kit, use existing models, need no electrical power, honor their on/off setting, and only permit gas to flow from higher to lower pressure:

• Passive Pressure Regulator: limits downstream pressure to a setpoint.
• Passive Back-Pressure Regulator: retains an upstream minimum pressure while allowing excess gas to pass.
• Vacuum Relief Valve: admits gas when downstream pressure is too low.
• Low-Pressure Valve: permits flow when upstream pressure is below its setpoint.
• High-Temperature Valve: opens when inlet temperature exceeds a specified value.
• Low-Temperature Valve: opens when inlet temperature falls below a specified value.

Temperature setpoints are in Kelvin (K). Valve flow depends on the pressure gradient; hysteresis helps prevent repeated opening and closing around a threshold.

Configuration and compatibility

Tune each machine's limit in MPa, pump falloff, stopping tolerance, valve throughput and response settings in [code]BepInEx/config/dev.stationeers.atmosrealism.cfg[/code]. The default maximum mechanical-valve flow multiplier is 1.5.

Requires BepInEx 5 and StationeersLaunchPad. Developed and tested against Stationeers 0.2.6428.27798. Game updates may affect Harmony patches. Original powered regulators are unchanged. Electrolyzer, H2Combustor and Nitrolyzer retain their existing special transfer logic. Gas heating, cooling and phase changes are still handled by the game.

Feedback welcome

Please report devices that exceed their configured pressure limit, unexpected changes in gas quantities, valve control problems, save/load issues or compatibility conflicts. Include the game version, the device, inlet and outlet pressures, reproduction steps and, ideally, a [code]slp debugpkg[/code] diagnostic ZIP.

Suggestions for realistic, lightweight atmospheric behavior are welcome too!