Abrasive Blasting, Shot Peening & Surface Prep worked example
Blast Air Pressure Loss at 7.2% maximum acceptable loss: a worked example
Suppose maximum acceptable loss falls to 7.2%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate pressure drop as a percent of target nozzle pressure and compare it with the maximum acceptable loss.
The inputs for this scenario
- Measured pressure drop: 12 psi (held at the documented default)
- Target nozzle pressure: 100 psi (held at the documented default)
- Maximum acceptable loss: 7.2 % (the input this scenario stresses; the baseline uses 10)
Working through the calculation
- The calculation starts from the formula this tool documents: Pressure loss = measured pressure drop รท target nozzle pressure.
- Pressure loss works out to 12 % at these inputs, and this is the headline figure for the scenario.
- Margin to limit works out to -4.8 points at these inputs.
- Measured drop works out to 12 psi at these inputs.
- Target nozzle pressure works out to 100 psi at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where maximum acceptable loss sits at 10% and the headline result is 12 %, this scenario lands almost exactly on the baseline at 12 %.
- It divides the measured pressure drop by the target nozzle pressure to give a percent loss, then compares that loss against your maximum acceptable threshold. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.
Results at a glance
- Pressure loss: 12 % (headline result)
- Margin to limit: -4.8 points
- Measured drop: 12 psi
- Target nozzle pressure: 100 psi
Run it with your numbers
- To rerun this with your own numbers, open the live Blast Air Pressure Loss calculator, set maximum acceptable loss to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.