Atlas Copco GA 11+ Instruction Book page 76

Air delivery pipe
The pressure drop over the air delivery pipe can be calculated from:
Δp = (L x 450 x Q
d = inner diameter of the pipe in mm
Δp = pressure drop in bar (recommended maximum: 0.1 bar (1.5 psi))
L = length of the pipe in m
P = absolute pressure at the compressor outlet in bar(a)
Q = free air delivery of the compressor in l/s
c
It is recommended that the connection of the compressor air outlet pipe is made on top of the
main air net pipe in order to minimize carry-over of possible condensate residue.
For proper maintenance, a manual controllable valve has to be installed on the compressed air
outlet in order to isolate the compressor from the compressed air network.
Dryer bypass
A set of pipes to bypass the dryer during service operations is available as standard option.
Consult your supplier.
74
1.85 5
) / (d x P)
c
Instruction book
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