AWG I Operating manual I Fittings I
Inductors Z2, Z4 and Z8
USE
32 / 40
ENGLISH
M1061B10 I Rev. 01-02/20
Pressure loss in the inductor
The suction capability of the inductors is fundamentally based on a
considerable pressure loss.
This pressure loss in the inductor depends on the counter pressure at
the inductor outlet and is calculated as the hose friction plus the differ-
ence in height between the inductor and the foam nozzle.
Inductor inlet pressure
Optimum pressure ranges Inductor inlet
Inductor outlet
Low expansion foam nozzle
Medium expansion foam
nozzle
8 bar – 9.5 bar
6 bar – 7 bar
5 bar – 6 bar
3 bar – 4 bar
The pressure ratio between inductor inlet and outlet varies depending
on the chosen suction rate.
Suction height of the foam agent
If the suction height of the foam agent is greater than approx. 1.5
m,
the rates set at the metering valve are sometimes significantly under-
cut. This applies in particular to rates above 3 %.