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# Compressed Air Pipes - Fittings and Pressure Loss

Pressure drop in compressed air pipe line fittings can be expressed as equivalent length in meters of  pipe line.

Compressed Air Pipes - Fittings and Equivalent Pipe Length Pressure Loss - SI Units

Fitting
Equivalent Pipe Length (m)
Nominal Pipe Size (mm)
1520253240506580100125
90o bend 0.15 0.2 0.25 0.35 0.5 0.6 0.8 1.0 1.2 1.5
90o elbow 0.25 0.4 0.5 0.65 0.8 1.0 1.4 1.8 2.4 3.2
Tee - run 0.2 0.3 0.4 0.5 0.7 0.85 1.1 1.3 1.6 2.0
Tee - side outlet 0.5 0.7 1.4 1.8 2.4 2.7 3.6 4.6 5.7 7.0

#### Example - Compressed Air Pipe Line and Equivalent Length

A 90o bend equals to a 0.6 m50 mm pipe line.

Compressed Air Pipes - Fittings and Equivalent Pipe Length Pressure Loss - Imperial Units

Fitting
Equivalent Pipe Length (ft)
Nominal Pipe Size (inches)
1/2"3/4"1"1 1/4"1 1/2"2"2 1/2"3"4"5"
90o bend 0.5 0.7 0.8 1.2 1.7 2 2.6 3.3 4 5
90o elbow 0.8 1.3 1.7 2.1 2.6 3.3 4.6 5.9 7.9 10.6
Tee - run 0.7 1 1.3 1.7 2.3 2.8 4.4 4.3 5.3 6.6
Tee - side outlet 1.7 2.3 4.6 5.9 7.9 8.9 11.9 15.1 18.8 23.1

## Related Topics

### • Gases and Compressed Air

Properties of air, LNG, LPG and other common gases. Pipeline capacities and sizing of relief valves.

## Related Documents

### Compressed Air - Friction Loss in Hoses

Friction loss in air hoses vs. operating pressure.

### Compressed Air - Pipe Line Pressure Drop Diagram

Calculate pressure drop in compressed air pipe lines with a nomograph diagram.

### Compressed Air - Size of Pipe vs. Capacity

Air pipe lines capacities at pressure 100 psi (6.9 bar).

### Compressed Air Pipe Line Capacity

Capacities of compressed air pipelines - pressure ranging 5 - 250 psi (0.5 - 17 bar).

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