Pipe Sizing

Use the table below to determine the pipe sizing you require for your installation:

Select the flow rate of the compressor
Select the distance between the compressor and the furthest most point of the installation.
Cross the lines of flow rate and distance columns to establish the size of the pipe you require.
Example - 42cfm compressor with a maximum pipework distance of 200 metres (to the furthest usage point) will require a 32mm pipework system.

Flow Rate

Distance between the Compressor
and the furthest usage point

NI/min	Nm3/h	cfm				25m 82ft	50m 164ft	100m 328ft	150m 492ft	200m 656ft	300m 984ft	400m 1312ft	500m 1640ft	1000m 3280ft	1500m 4921ft	2000m 6562ft
230	14	8	•			20	20	20	20	20	20	20	20	20	25	25
650	39	23	•			20	20	20	20	25	25	25	25	32	32	40
900	54	32	•			20	20	25	25	32	32	32	32	40	40	40
1200	72	42	•			20	20	25	25	32	32	32	32	40	40	50
1750	105	62	•			20	25	32	32	32	40	40	40	50	50	50
2000	120	71	•			25	25	32	32	32	40	40	40	50	50	50
2500	150	88	•			25	32	32	32	40	40	40	50	50	63	63
3000	180	106	•			25	32	32	40	40	40	50	50	50	63	63
3500	210	124	•			25	32	40	40	40	50	50	50	63	63	63
4000	270	159	•			32	32	40	40	50	50	50	50	63	63	80
6000	360	212	•			32	40	50	50	50	50	63	63	80	80	80
7000	420	247	•			32	40	50	50	50	63	63	63	80	80	80
8500	510	300	•			40	40	50	50	63	63	63	63	80	80	110
12000	720	424	•			40	50	63	63	63	80	80	80	110	110	110
15000	900	530	•			50	50	63	63	80	80	80	80	110	110	110
18000	1080	636	•			50	63	63	80	80	80	80	110	110	110	110
21000	1260	742	•			50	63	62	80	80	80	110	110	110	110	110
26000	1560	918	•			63	63	80	80	80	110	110	110	110	110	110
31000	1860	1095	•			63	63	80	80	110	110	110	110	110	110	110•
33000	1980	1165	•			63	80	80	110	110	110	110	110	110	110•	110•
44000	2640	1554	•			63	80	110	110	110	110	110	110	110•	110•	110•
50000	3000	1766	•			80	80	110	110	110	110	110	110	110•	110•	110•
58000	3480	2048	•			80	80	110	110	110	110	110	110	110•	110•	110•
67000	4020	2366	•			80	110	110	110	110	110	110	110•	110•	110•	110•
75000	4500	2648	•			80	110	110	110	110	110	110•	110•	110•	110•	110•
83000	4980	2931	•			80	110	110	110	110	110•	110•	110•	110•	110•	110•
92000	5520	3249	•			110	110	110	110	110	110•	110•	110•	110•	110•	110•
100000	6000	3531	•			110	110	110	110	110•	110•	110•	110•	110•	110•	110•

Pressure 7 bar - Total pressure drop 4%

• = Pressure drop is greater than 4%

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