Pure Flow

Stable

Consistent flow throughout, with only maximum pressure and two small stop parameters controlling the phases.

Less complex than Automatic Pro because only one flow value is used apart from the first filling, hence the name Pure Flow.

Works with and without scales.

Current stable build: 2026-04-14.

Downloads

Variations

Current files for the active stable build.

• 5-10g

  93°C default

  Download JSON

• 10-20g

  93°C default

  Download JSON

• 20-25g

  93°C default

  Download JSON

Quick notes

• The profile is based on a direct lever workflow: adjusting pressure to the flow, with a slightly longer pre-infusion.
• Works in time mode and in weight mode.
• Adjust temperature to your bean type. The default is 93°C.
• Stop weight and/or time also determine the output quantity.
• For 9g of beans, change the flow value to 1g/s.
• In weight mode, the pre-infusion phase is also stopped by weight.

Quick settings

Weight mode

Weight = Dose x Ratio

Example: 18g in x 1:2 ratio = 36g out

Time mode

For time mode, stop the brew manually the first time and enter the time in the settings.

Roast and ratio recommendations

Medium-dark roasts

• Around 91°C
• Ratio: 1:1.5 to 1:2.5

Medium-light roasts

• Around 94°C
• Ratio: 1:2.5 to 1:3+

After your first shot

• If the coffee tastes sour or salty, try a higher ratio like 1:2.5+ and consider a slightly higher temperature.
• If the coffee tastes bitter or dry, try a lower ratio like 1:1.5- and consider a slightly lower temperature.
• If pressure looks too low or the basket has extra headspace, check Troubleshooting.

Need more detail?

• Quick Start / Dialing In covers ratio, time mode, and first-shot setup.
• Troubleshooting helps with pressure, taste, and time-mode issues.
• GM Community Espresso Guide adds broader espresso background and workflow guidance.
• Version history lists every published Pure Flow build.