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Function and identification
1
Function and identification
1.1 Function
4
Fig. 1: Duodos: Air-driven double diaphragm pump.
The Duodos is an air-driven double diaphragm pump.
The Duodos is run-dry safe and self-priming.
The pump capacity of the double diaphragm pump can be con‐
trolled by changing the pressure in the air supply. The air control is
designed for oil-free operation. The Duodos is suitable for the
transport of liquid chemicals (media).
The Duodos double diaphragm pump transports media up to a
delivery height of 7 metres. It is essential that you note the pump
characteristic curve
Ä Chapter 13 'Performance curves'
on page 36 , as the pump capacity is seriously dependent on the
back pressure.
Check the material tolerability when selecting your double dia‐
phragm pump. Also consider the density, viscosity, solids content
and temperature of the medium being pumped.
Tab. 2: Permissible values for the medium
Design
PP version (PPS):
PVDF version (PVT):
Viscosity of the medium: max. 200 mPas
Solids: < 2 mm
Temperature of the medium
10 ... 80 °C
-13 ... 93 °C
A2984
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