Replacement valves aid CE approval
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Burkert Fluid Control Systems product story
Edited by the Engineeringtalk editorial team
Mar 5, 2003
Digitrol of Swansea has specified shutoff valves and manifolds from Burkert Fluid Control Systems for a range of cleaning chemical dispensing machines it is re-engineering for one of its customers.
Digitrol of Swansea, a company specialising in the design and manufacture of industrial electronics and computer systems, has specified shutoff valves and manifolds from Burkert Fluid Control Systems for a new range of cleaning chemical dispensing machines it is re-engineering for one of its customers, Diversified Solutions of Swansea.
The eight- and four-product versions of the Ecovend needed re-engineering to improve their performance and reliability and ensure CE approval for the UK market.
The units dispense a correct mix of highly concentrated chemicals and water at a preset dilution to produce cleaning fluids for use in factories, clubs, pubs, schools and hospitals.
To comply with COSHH regulations, chemicals are stored in secure compartments and operator access is authorised using a pin number or fingerprint sensor, which also ensures that each operation of the machine and the chemicals dispensed are logged.
Commenting for Digitrol, spokesman David Coughlin says early prototypes tested in the field were stopped due to low water flow and operators were topping up manually with tap water, which meant that the accuracy of the dispensing was not properly controlled.
"We reviewed the whole dispensing operation", he says, "and, as the original machines were already fitted with Burkert valves, we contacted the company for advice".
Burkert Area Sales Engineer Steve Tucker takes up the story: "The machine's manufacturer had fitted the same size shut-off valves to control the dispensing of chemicals and water, but the water valve specified was too small and could not deliver water fast enough".
"We recommended the addition of a customised manifold to improve the reliability and the overall control of the dispensing operation and in addition, to improve water dispensing, suggested an increase in the manifold bore and a larger shut-off valve".
And the result? Coughlin says taking Burkert's advice certainly solved Digitrol's problems.
With the new equipment fitted they achieved a doubling of the water flow in both Ecovend models and the machines now dispense at the designed rate.
Commenting on the service that Burkert provided he adds: "We have used Burkert equipment before and they are a preferred supplier, so we knew what to expect.
However, we were still very impressed with their excellent response to our technical problems on this project".
The Burkert equipment fitted includes a customised manifold and shutoff valves for chemical dispensing and for water.
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