Peristaltic pumps from Watson-Marlow Bredel were used by Glen Dimplex Home Appliances to pump vitreous enamel on to the surfaces of cookers.
Glen Dimplex Home Appliances, which incorporates the Stoves, New World and Belling brand names, produces cookers for domestic, leisure and business requirements at its Prescot, Merseyside manufacturing facility that employs over 1200 workers.
About 10 years ago, when the company developed a groundbreaking method of spraying enamel using high speed disc technology, it posed certain problems.
Initial use of the disc technology employed traditional pressure pots, which used pressurised air to force the fluid to the application, atomising the material.
The unreliable pressure pots led to cross contamination concerns especially when changing colour in addition to causing irregular flow of material to the atomising head.
Glen Dimplex Home Appliances consulted with Watson-Marlow and successfully tested a peristaltic pump.
Processed vitreous enamels are more like ground paste than fluid in composition, requiring the peristaltic pump to be robust and reliable.
Since the successful trial, Glen Dimplex Home Appliances has established four disc plants at its Prescot site, each employing three Watson-Marlow peristaltic pumps.
Along with one pump retained for back-up, the total number onsite currently stands at 8, with 14 pumpheads.
The peristaltic pumps are applying colour to thousands of cookers every year with Glen Dimplex Home Appliances currently having a 24% share of the UK market.
Key benefits derived by Glen Dimplex Home Appliances include:
- Rapid colour change
- Better control over pump speed and volume of enamel pumped
- Significant reduction of cross contamination between colours
- Zero valves, seals or glands eliminates the risk of the pump contaminating the fluid or the fluid contaminating the pump
- Reduction of day-to-day maintenance costs and yearly legislation conformities with the elimination of pressure pots