The new Verderflex Dura 65 hose pump replaces the popular Verderflex VF65. Thanks to the optimisation of the rotor, rotor shoe and the sliding surface of the hose, this new product achieves the highest flow rate on the pump market at this size. With a maximum flow rate of 33 000 litres/hour, it exceeds the performance of the previous VF 65 by 20%. Additionally, since the rotor requires fewer revolutions for this performance, the hose has fewer occlusions and therefore achieves a 20% longer hose service life.
According to Darryl Macdougall, Managing Director, Verder Pumps South Africa, “Our new hose pump is much more than just a facelift to replace the Verderflex VF65. Our R&D team placed significant focus not only on the technical standpoint, but also what would make life easier, for both the owner and the user, when developing this pump.”
It offers a seal-less and valveless, proportional flow rate. By incorporating the technical advances from the rest of the range and increasing the utilised length of the hose, the unit has a class-leading swept volume which enables the pump to achieve a maximum continuous flow rate of 22m3/hr. This puts the Dura 65 with a flow rate that matches existing pumps in the market, which are designated as ‘80’ size, making the cost per flowrate with the Dura 65 better value for money. Additionally, the robust hose can be changed on site.
Verder have also made some modifications which ensure that servicing is more about ease, and reduced time rather than mess and complexity. There is now a filling nozzle for the lubricant, and a service access port on the front cover.
To make the pump safer, a lifting point has been fitted on the front cover and a valve and hose tail has been added at the lubricant drain port so it will not spill all over the floor, when emptying. There is an option for a level indicator, and max/min fluid sensors for the lubricant bath – so it can be connected and remotely monitored. This can also support hose failure monitoring.
The smaller pump sizes of the Verderflex Dura are also available with an integrated frequency converter including potentiometer and installed hose breakage monitoring: the iDura launched in September 2020 is available for the Dura 5 – Dura 35. The iDura series can be controlled via 4-20 mA, Modbus RTU, CANopen or Profibus via the inverter.
Key features of the Dura 65:
- Class leading continuous flowrate of 22m3/hr
- Greater utilisation of hose, so greater swept volume (higher flow/lower revolutions = longer hose life)
- The same reliable design of the Verderflex hose providing an optimum hose life
- Filler Nozzle/Access port – can change the hose without removing the front cover
- Self-priming/ dry running/ seal-less peristaltic technology
