Page 147 - ingenioren

Pressure drop diagram for hoses

Internal hose
diameter (mm)
Atlas Copco Tools has seven 185
different hoses covering all types 150
of needs for pneumatic hand tools.

The diagram helps you to choose 125
the right hose according to the air 100 25
consumption of the tool and the
length of the hose. The purpose of
the diagram is to ensure that the

pressure drop in the hoses does
not exceed 0.2 bar. 50 20

How to find correct internal 16

hose diameter: 20

1. Find the required air consump-
tion for the tool at 6 bar and the Air flow (free air) l/s 15 13
required hose length. 10

2. Use the required hose length 10

and air flow to find required
hose size.

Example 5 08
The tool has an air consumption of

10 l/s and the application requires a
hose length of 7 m. These two val-
ues have a cross point slightly under 2 06

the 10 mm size hose (7 m of 10 mm
hose gives a value of approximately
11 I/s).Therefore a 10 mm hose will 1,5
be suitable. 05

2 4 6 8 10 12

Inlet pressure 7 bar Hose length (m)
Pressure drop 0.2 bar
Two hose nipples included

Air line installation 147