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Advanced Cicerone® · Keeping and Serving Beer

Applied gas pressure, resistance, and flow rate

Syllabus Path

Applied pressure must cover carbonation maintenance plus total system resistance to produce a suitable flow rate at the faucet. Diagnose fast, slow, foamy, or flat pours by comparing applied pressure, total restriction, gas blend, temperature, and target flow.

  1. I. Keeping and Serving Beer
  2. D. Draft principles
  3. 3. Applied gas pressure, resistance, and flow rate

Exam Focus

  • Explain applied gas pressure, resistance, and flow rate as a service topic within Draft principles.
  • Relate beer temperature and carbonation to equilibrium pressure, then distinguish that pressure from the added requirement to overcome system resistance.
  • Predict how a pressure or restriction change affects flow and carbonation over time instead of using regulator adjustments as a temporary foam control.

Core knowledge

  • Applied pressure must cover carbonation maintenance plus total system resistance to produce a suitable flow rate at the faucet.
  • A balanced system uses pressure, gas blend, line restriction, lift, and hardware so beer pours without overcarbonating or stripping carbonation.
  • Beer pumps add motive force in high-resistance or long-draw systems without requiring excessive CO2 partial pressure.

Study application

Diagnose fast, slow, foamy, or flat pours by comparing applied pressure, total restriction, gas blend, temperature, and target flow.

References

4 available