Technical Information

Correct Installation

What Size Pipe Is Required?

The most overlooked area in piping layout and design is the speed at which the compressed air travels. Under sizing the diameter of the pipe system will often lead to increased velocity.

Technical Flow

Every pipe creates a certain resistance to the air flow. This resistance has to do with the inner surface of the pipe, its internal diameter, the flow velocity, and to the overall length of pipe.

High velocity can significantly contribute to:

  • Back pressure
  • Irregular pressure control
  • Turbulence in the system
  • Excessive pressure drop
  • Additional energy and maintenance requirements

The pipe sizing chart allows you to determine the correct diameter of the ring main compressed air pipe system:

  1. Choose the flow rate of the compressor in the left hand column
  2. Choose the distance from the compressor to the furthest outlet in the right hand column
  3. Cross the lines of both columns to choose the correct diameter pipe

Correct Pipe Sizing Table up to 63mm

Flow Volume Compressor Distance to  Outlet
NI/m Nm3/h cfm 25m 50m 100m 150m 200m 300m 400m 500m 1000m 1500m 2000m
230 14 8 20 20 20 20 20 20 20 20 25 25 25
650 39 23 20 20 20 20 25 25 25 25 32 32 32
900 54 43 20 20 20 25 25 25 32 32 32 40 40
1200 72 42 20 20 25 25 25 32 32 32 40 40 40
1700 105 62 20 25 25 32 32 32 32 40 40 50 50
2000 120 71 20 25 32 32 32 32 40 40 40 50 50
2500 150 88 25 25 32 32 32 40 40 40 50 50 50
3000 180 106 25 32 32 32 40 40 40 40 50 50 63
3500 210 124 25 32 32 40 40 40 40 50 50 63 63
4500 270 159 32 32 40 40 40 50 50 50 63 63 63
6000 360 212 32 40 40 40 50 50 50 63 63 63 63
7000 420 247 32 40 50 50 50 50 63 63 63 63 110
8500 510 300 40 40 50 50 50 63 63 63 63 110 110
12000 720 424 40 50 50 63 63 63 63 110 110 110 110
15000 900 530 40 50 63 63 63 63 63 110 110 110 110
18000 1080 636 50 50 63 63 63 110 110 110 110 110 110
21000 1260 742 50 63 63 63 63 110 110 110 110 110 110
26000 1560 918 50 63 63 63 110 110 110 110 110 110 110
31000 1860 1095 63 63 63 110 110 110 110 110 110 110 110

If you need technical assistance selecting your required pipe, technical publications, or for any other technical information

Contact us at: Aroplus@aroplus.com
01527 584119