Stepped High Flow Tubes

  • Some cooling problems are caused by large pressure drops across long tubes.
  • Stepped tubes can improve flow, especially on long, thin tubes.
  • Stepping the diameter from larger to smaller can increase flow

Straight

  • An example of straight tube performance.
  • Flow drop-off seen in the straight tube above is reduced.
  • Greater impact is seen at longer lengths.
  • See all tube sizes here.
  • Specify custom High Flow Tubes here.
Tube Size OAL
(in)		 GPM
O.D. I.D.
0.148 0.135 2 2.84
6 2.31
12 1.94
20 1.65

The longer the tube, the lower the flow

Large Tube OAL
(in)
GPM		 Percent Flow
Increase Over
Straight Tube
O.D. I.D.
0.187 0.167 6 2.52 9.2%
12 2.33 20.2%
20 2.16 30.9%
0.25 0.23 6 2.83 22.6%
12 2.75 42.2%
20 2.65 61.1%

Larger steps can provide better flow

GPM goes up

with a stepped

tube

Stepped

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