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 VolumeCompressor Distance to  Outlet
NI/mNm3/hcfm25m50m100m150m200m300m400m500m1000m1500m2000m
2301482020202020202020252525
65039232020202025252525323232
90054432020202525253232324040
120072422020252525323232404040
1700105622025253232323240405050
2000120712025323232324040405050
2500150882525323232404040505050
30001801062532323240404040505063
35002101242532324040404050506363
45002701593232404040505050636363
60003602123240404050505063636363
700042024732405050505063636363110
8500510300404050505063636363110110
1200072042440505063636363110110110110
1500090053040506363636363110110110110
1800010806365050636363110110110110110110
2100012607425063636363110110110110110110
26000156091850636363110110110110110110110
3100018601095636363110110110110110110110110

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