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Pressure Basics

Pressure Basics

Pressure vs Flow

Pressure gives force; flow gives volume. High pressure with insufficient flow still results in poor tool performance.

Bar and PSI Conversions

  • 1 bar ≈ 14.5 PSI
  • Typical shop compressors: 6–7 bar (≈ 90–100 PSI).

Do You Really Need More Pressure?

Single-stage piston: Up to 8 bar; two-stage: 10–12 bar; screw compressors: stable pressure.

Pressure Drops

Filters, dryers, and regulators cause pressure loss. Plan for 0.3–0.5 bar drop.


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