The new 5 & 7 models extend the range of Verderflex Dura peristaltic pumps with 2 new high pressure low volume hose dosing models for handling less than one litre/hour at 5 or 8 bar with a rugged (re-enforced) hose. The range now boasts dosing/transfer rates of up to 12m3 p/h.
The Verderflex 5 & 7 Dura pumps feature an internal hose diameter of 5mm and 7mm respectively. The range as a whole has been specifically designed for the handling of slurry and sludge like fluids such as those found in the treatment of wastewater, additives in to food and beverage mixing, pigments and inks.
Key applications include
• Dosing of lime and other chemical solutions in the treatment of wastewater and sewage.
• Dosing of sodium hypochlorite for bacterial remediation.
• Acidity control/pH buffering
• Delivery of pigment solution in manufacturing
Specifying a Verderflex Dura pump solves or minimises a range of problems commonly experienced by engineers.
The Verderflex Dura can handle gaseous fluids such as sodium hypochlorite solution which may cause air-locks or jamming in metering pumps. The peristaltic working principle simply draws and pushes the composition regardless. Many organisations set the pump to ‘over-dose’ to allow for the off-gassing effect which increases chemical costs. The Verderflex Dura provides consistent and reliable delivery and cost of water treatment chemical.
The peristaltic principle also minimizes abrasive wear from slurry-type fluids by the central rotor turning and compressing a hose and displacing fluid the fluid. As no moving parts come into contact with the hose there is no abrasive wear.
The internal hose provides an open flowpath which prevents clogging where there are viscosity changes or crystallisation of reagents. As the hose compressing and relaxing is the only ‘action’ in conjunction with the rotor, the pump can truly self-prime and run-dry up to 9.5m compared to below 5m wet-primed lifts associated with diaphragm pumps. The Dura peristaltic pump eliminate the need for pre-wetting and priming in lower volume dosing applications.
When a chemical flow is interrupted, the reagent may suffer crystallisation, causing a blockage, particularly in metering pumps. The rotor and hose positive displacement of a peristaltic pump allows any blockages to be solved through reversing the action of the pump.
The Dura range features simple flanges that are leak free and disaster-proof which prevents a dangerous spill or spray around site engineers and on to capital equipment. The flanges can be easily removed to quickly change a hose and are aviable in a range of materials for chemical compatibility. There is no back pressure or degassing valves required.
For stable liquid delivery the Dura 5 & 7 hoses give consistent dosing accuracy even under varying operating conditions. The reinforced hose has a burst pressure in excess of 80 Bar (1150 PSI) which gives a high level of safety. The delivery is consistent and assured depending on the run speed of the pump. When twinned with an inverter and product analyzer the pump can regulate pH, concentration and many other fluid types.
The Verderflex Dura range is the choice of UK water companies, manufacturers and processing plants for accurate and reliable dosing.
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For further information contact:
Simon Aspinall
Verder UK
3 California Drive,
Castleford, WF10 5QH
Telephone: +44 (0) 1924 221007
Fax: +44 (0) 113 2465649
www: www.verder.co.uk/
e-mail: Simon.Aspinall@verder.co.uk
Twitter: https://twitter.com/verderpumpsuk
