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Compressed Air Pipes - Fittings and Pressure Loss

Fittings in compressed air pipe lines and equivalent length pressure drop.

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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 m 50 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

compressed air pressure drop equivalent pipe length fittings

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