Australian Water Management Review Vol. 1 2014 | Page 96

Metering pumps chosen by
Russian automotive plant
After evaluation and trial, the Russian
factory at Togliatti of manufacturer Mefro
Wheels opted to use the latest Qdos30
metering pumps from Watson-Marlow.
Selected ahead of diaphragm metering
pumps, these pumps have been fully
integrated into a complex process control
system at their water treatment plant.
With turnover of AU$830 million, Mefro Wheels
GmbH has nine factories worldwide and produces
25 million car, truck, agricultural and construction
machinery wheels annually.
Automation
For greater levels of automation, Mefro considered
peristaltic pumps for its water treatment plant and in
2012 discussed their needs with Sergey Davidyan, SE
at Watson-Marlow, who presented the Qdos30 range
as a viable solution.

manufacturer of pneumatics responsible for
automating our wheel fabrication shop], we decided
to use Qdos30 pumps with ReNu pumpheads in our
water treatment unit,” says a spokesman at Mefro.
“The Qdos30 pumps proved excellent both in testing
and in actual day-to-day operation.”
Quality
Being German, Mefro has high expectations in terms
reliability, metering accuracy and performance, also ease
of integration, operation and maintenance. The Qdos30
stood up to their most rigorous of demands. The pumps
deliver flow from 0.1 to 500 ml/min, pressure to 7 bar,
and integrate easily through IP66 manual, analogue and
PROFIBUS control options. Featuring patented ReNu
pumphead technology which is fully self-contained for
safe, tool-free maintenance. This is why Qdos30 caught
the attention of Mefro engineers.

“When compared with some manufacturers of
metering pumps, including diaphragm types, we
“After careful consideration, together with our
were surprised by the high accuracy characteristics
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“However, following operational measurements, these
characteristics were substantiated completely.”
Performance
Qdos30 pumps have been running at Togliatti for
over ten months, performing in a range from 3 to 5
l/h at pressures of 4 bar with control via an analogue
4-20mA signal transmitted by the central control
system to the Qdos30’s input.
“It is particularly gratifying that no ReNu pumpheads
have been replaced for the entire period of being
in service, despite almost constant operation since
commissioning,” concludes the spokesman.