domnick hunter - a division of Parker-Hannifin Corporation. World-Class Filtration, Purification and Separation Solutions to Industry

12.18 - Maximum Recommended Flow through Pipes and Pressure Loss through Fittings

Maximum recommended flow through main lines*

Nominal bore (mm)	Actual bore (mm)	Rate of Air-flow at 7 bar L/s ANR
6	6	1
8	9	3
10	12	5
15	16	10
20	22	17
25	27	25
32	36	50
40	42	65
50	53	100
65	69	180
80	81	240
100	105	410
125	130	610
150	155	900

Note: Velocity of air-flow must be restricted to less than 6 m/s, if carry over of moisture past drain legs is to be avoided. *Medium weight steel tube to BS1387 table 2 or ISO 65

domnick hunter - a division of Parker-Hannifin Corporation. World-Class Filtration, Purification and Separation Solutions to Industry

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12.18 - Maximum Recommended Flow through Pipes and Pressure Loss through Fittings

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Nominal bore (mm)	Actual bore (mm)	Rate of Air-flow at 7 bar L/s ANR
6	6	1
8	9	3
10	12	5
15	16	10
20	22	17
25	27	25
32	36	50
40	42	65
50	53	100
65	69	180
80	81	240
100	105	410
125	130	610
150	155	900

Nominal bore (mm)	Actual bore (mm)	Rate of Air-flow at 7 bar L/s ANR
6	6	1
8	9	3
10	12	5
15	16	10
20	22	17
25	27	25
32	36	50
40	42	65
50	53	100
65	69	180
80	81	240
100	105	410
125	130	610
150	155	900

domnick hunter - a division of Parker-Hannifin Corporation. World-Class Filtration, Purification and Separation Solutions to Industry

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Quick Links

12.18 - Maximum Recommended Flow through Pipes and Pressure Loss through Fittings

Legal

Nominal bore (mm)	Actual bore (mm)	Rate of Air-flow at 7 bar L/s ANR
6	6	1
8	9	3
10	12	5
15	16	10
20	22	17
25	27	25
32	36	50
40	42	65
50	53	100
65	69	180
80	81	240
100	105	410
125	130	610
150	155	900