Pipe Sizing Chart - Diameter (mm)

Estimated Values: Closed loop system at 100 psi with a 5% pressure drop.

Flow Rate (cfm)	Main Ring Length 500 (feet)	Main Ring Length 1000 (feet)	Main Ring Length 2000 (feet)	Main Ring Length 3000 (feet)	Main Ring Length 4000 (feet)	Main Ring Length 5000 (feet)	Compressor (hp)
10	16.5	16.5	16.5	25	25	25	<15
25	25	25	25	25	25	25	<15
50	25	25	40	40	40	40	<15
75	25	40	40	40	40	40	15 - 40
100	40	40	40	40	40	40	15 - 40
150	40	40	40	50	50	50	15 - 40
250	40	40	50	50	63	63	41 - 125
350	50	50	63	63	63	63	41 - 125
500	63	63	63	76	76	76	41 - 125
750	63	63	76	76	100	100	126 - 250
1000	76	76	76	100	100	100	126 - 250
1250	76	76	100	100	100	100	251 - 500
1500	100	100	100	100	100	100	251 - 500
1750	100	100	100	100	100	100	251 - 500
2000	100	100	100	100	100	168	251 - 500
2250	100	100	100	168	168	168	501 - 1000
2500	168	168	168	168	168	168	501 - 1000
2750	168	168	168	168	168	168	501 - 1000
3000	168	168	168	168	168	168	501 - 1000
3250	168	168	168	168	168	168	501 - 1000
3500	168	168	168	168	168	168	501 - 1000
4000	168	168	168	168	168	168	501 - 1000
4500	168	168	168	168	168	168	1001 - 1400
5000	168	168	168	168	168	168	1001 - 1400
5500	168	168	168	168	168	168	1001 - 1400