BLADE
5-3
TI215G0010
Installation
DIMENSIONS OF COMPRESSED AIR
DISTRIBUTION PIPING
We mention that the main causes for wastes are pipings
with unsuitable diameter and losses due to an improper
setting up of the equipment or deteriorated materials.
The pipe diameter must be duly selected so as to
minimize the pressure drop between the compressor or
the storage receiver and the point of use, based on the
machine features, like air delivery and working pressure.
The pressure drop is proportional to the pipe length
and most losses occur during the change of direction
(curves, elbows) and in the valves.
With a pipe having the same diameter as the compressor
outlet, the length should not exceed 50 m.
To make a check of one’s own equipment, “Table 1”
gives the load losses, over 100 metres straight piping,
according to nominal diameters usually employed and
at dierent air delivery and working pressure conditions.
A perfect air distribution system should limit the
pressure drop from compressor to the point of use
within few tenths of bar.
Table 1 - Load leaks (bar) over 100 m straight piping
Diameter
piping
Nominal delivery
[m
3
/min]
PRESSURE [bar]
6 7 8 9 10
1”
1 0,087 0,076 0,068 0,061 0,056
2 0,315 0,275 0,245 0,220 0,200
3 0,666 0,583 0,518 0,467 0,424
4 1,134 0,993 0,883 0,795 0,722
2”
4 0,038 0,033 0,030 0,027 0,024
8 0,138 0,120 0,107 0,096 0,088
16 0,496 0,434 0,386 0,347 0,316
24 1,050 0,919 0,817 0,735 0,669
3”
8 0,019 0,017 0,015 0,013 0,011
16 0,069 0,060 0,054 0,048 0,044
32 0,248 0,217 0,193 0,174 0,158
64 0,894 0,783 0,696 0,626 0,570
4”
16 0,018 0,015 0,014 0,012 0,011
32 0,064 0,056 0,050 0,045 0,041
64 0,230 0,201 0,179 0,161 0,146
128 0,829 0,725 0,645 0,580 0,528
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