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Reverse Flow
A focused mobile reference for firefighters who need clear hydraulic numbers without dragging a full spreadsheet into the street.
Reverse Flow ecosystem
Mobile tools, training resources, and fire hydraulics references in one place.
Mobile App
Fast hydraulic calculations and pump operator reference tools built for the phone already in your pocket.
Manufacturer References
Quick paths to useful manufacturer and equipment reference material without burying the operational work.
Fire Hydraulics Resources
Focused fireground hydraulics support for training, review, and practical pressure decisions.
Purpose-built reference
The hydraulic work, without the paper shuffle.
Fast Inputs
Enter the setup quickly, keep common values close, and get back to the pressure decision that matters.
Clear Results
See plain-language hydraulic estimates designed for training, refreshers, and quick operational reference.
Pump Operator Focus
Keep the interface centered on hose, nozzle, pressure, flow, and the choices pump operators actually make.
Low Friction Setup
No account required, no ads, and no ongoing data chores just to use the tool when it is needed.
Designed for field decisions
Clear numbers when the scene is not.
Reverse Flow keeps the interface tight: enter the setup, check the result, and compare the pressure path. It is built for training grounds, pump operator refreshers, and quick field reference.
Practical guardrailsPressure cues help flag setups that deserve a second look before they become habits.
Department-ready useBuilt around familiar hose, nozzle, and apparatus decisions without forcing a one-size-fits-all workflow.
Private by defaultNo account required, no third-party ads, and no personal data collection.
Important use notice
Reverse Flow is a reference tool.
Reverse Flow is not a substitute for your department's local practices, policies, training, standard operating guidelines, apparatus limits, flow-tested equipment data, or sound pump operator judgment. Calculations should be verified against local procedures and real operating conditions. The pump operator remains responsible for operating safely, accurately, and within department-approved guidelines.
Reverse Flow and its developer are not responsible for incorrect inputs, incorrect calculations, equipment variation, unsafe operation, or any loss, damage, injury, or operational problem resulting from use of the app or website.
Get the app
Put Reverse Flow on the phone that is already in your pocket.