- Air Operated Double Diaphragm Pumps
are innovative Air Operated Double Diaphragm Pump (AODDPs) that retain the
advantages of conventional AODPPs whilst making a leap forward to address
The parts of
Directflo® that come into contact with the pumped fluid are available
in a wide variety of materials, and so it is possible to configure Directflo®
pumps to offer complete chemical compatibility with most fluids.
pumps offer all the advantages of conventional AODDPs:
- Discharge fluids at
up-to 7 bar, to pump medium viscosity fluids even over long pipe runs and
up to significant heights.
- No rotating shaft
seals: no leaks pumping abrasive fluids.
- No rotating parts
and no tight clearances: pump slurries.
- Gentle pumping action
suitable for shear sensitive fluids or fluids that may form emulsions.
- Compressed air operation
with no electricity required, inherently safe concept for environments with
explosion risks. ATEX certified models available.
- Variable flow rate
and pressure through simple adjustment of the air pressure.
- Tolerate dry running.
- Dead heading: pumps
stop without any risk of damage when the fluid discharge line is fully closed.
significant improvements, through the unique Directflo® design, that will
be appreciated in your application:
- Superior performance
against back pressure, less loss of nominal flow capacity under real application
- Significant dry suction
lift, eliminate self-priming issues pumping from drums and even tall tanks.
- Dependable lube free
directional pivot air valve: starts-up every time. Tolerant of oil, moisture
and dirt. Non icing. No air leaks when pumps are stalled by closing the
fluid discharge line.
- Reduced air consumption
per liter pumped, saves energy and possibly avoids the need to buy a bigger
- Reduced pulsation,
greater accuracy during dosing and less splashing when dispensing.
- Lower vibrations and
lower noise level.
- Extremely reliable:
reduced part count design and very long life wear parts.
- Inline servicing of
air valve, diaphragms and ball valves, without disconnecting the plumbing.
The low part count design allows fast and reliable servicing by non-expert
- Robust, compact design.
treatment and finishing