Technical data

5
Compressed Air Applications Manual | Air quantity Compressed Air Applications Manual | Operating pressure
Operating pressure
Every compressed air application (ma-
chine or tool) requires a specific operat-
ing pressure, in addition to the relevant
air quality and volume.
If the operating pressure is too low – for
instance, 5 bar instead of 6 bar – the
performance of the machine or tool will
be reduced by some 30 %. An increase
in the compression by 1 bar will result in
additional costs of around 10 %.
A significant drop in pressure from
the compressor to the point of use
can be caused if the pipe cross-sec-
tions are too small or if the pipe sys-
tem contains local constrictions.
The pressure loss from the compressor
(receiver) to the point of use should not
exceed 0.1 bar.
When air flows through a pipe, there is
always a certain resistance. The degree
of resistance will depend on the surface
roughness of the inner walls, the length
of the piping, and the flow velocity.
Reduced operating
pressure
Performance loss in %

40
30
20
10
3
0.1 1
∆ pnetwork ≤ 0.1 bar
Length of piping
PE
PA
Pressure