Product Details Supplier Info More products
Download document:

Style 400 Datasheet - .PDF file.

The 521 series of peristaltic pumps and Gore Style 400 tubing from Watson-Marlow have been selected by Prelok to overcome problems in its adhesive coating fluid re-circulating process.

The 521 pumps and Gore Style 400 high-resilience tubing solved problems caused by previous pumps of damaging the fluid, or of the fluid damaging the pump.

Prelok provides a range of high-specification pre-applied thread locking and sealing products that are used in the automotive, IT construction and telecommunications sectors.

The company can process threaded components that range from miniature items for mobile communications through to M30 bolts used in bridge construction.

A problem at the company involved a process that re-circulates adhesive coating fluids prior to application.

These fluids can be water- or solvent-based with the exact make-up dependent upon customer requirements.

Andy Jones, site services manager and maintenance co-ordinator at Prelok, said: ‘The problem focused on micro capsules that are suspended in the adhesive coating fluid.

‘We found that the impellor-type pumps damaged the capsules, while a subsequently installed diaphragm pump could not work with the sometimes small amount of fluid that is present.

‘Furthermore, it was hard to get the specific diaphragm material, which is resistant to some of the aggressive chemicals we use,’ he added.

Jones recalled using Watson-Marlow peristaltic technology successfully in another process.

In peristaltic pumping operations, nothing but the hose or tube touches the fluid, eliminating the risk of the pump contaminating the fluid, or the fluid contaminating the pump.

Fluid is drawn into the pump, trapped between two rollers and expelled.

The complete closure of the tube gives the pump its positive displacement action, preventing backflow and eliminating the need for check valves when the pump is not running.

A Watson-Marlow 521 series pump was installed at Prelok’s Willenhall factory, where it overcame the previous problems encountered.

The company now has a total of four 521 series pumps at the factory, with a further four dotted across its European operations.

All of the units utilise an inverter to control speed, and all run continuously throughout the entire production period.

Despite this demanding workload, Jones said that maintenance tasks extend to no more than spraying some lubricant on the rollers and springs every now and again.

One final problem remained, however.

The aggressive nature of some of the chemicals used within Prelok’s adhesive coating fluids meant that the Marprene and Tygon tubing deployed initially exhibited short working life leading to short life and sometime ruptured tubes.

Jones said: ‘Since switching to the Watson-Marlow peristaltic pumps this at least meant it was easier to clean and get the process up and running again, however, it was still an issue we needed to resolve.

‘I contacted Watson-Marlow about alternative tube materials and our local sales engineer sent me a sample pack of different tubing material for me to immerse in our fluid to test.

‘He followed up with a site visit and suggested we try a new type of pumphead (with quick-release couplings) and Gore Style 400 tubing to trial.

‘So far we haven’t had a tubing rupture in the months it has been running,’ he added.

While chemicals will attack most other types of tubing, the secret resilience of Gore Style 400 is Viton GF-600S, a peroxide-cured fluoroelastomer based on Dupont advanced polymer architecture.

Performance testing shows that Style 400 tubing offers greater than 50 times longer life than conventional non-reinforced extruded tube.

Thanks to its expanded PTFE reinforcement, the tubing also offers high burst resistance to protect against the swelling effect produced when pumping aggressive chemicals using standard extruded tube.

Watson-Marlow Fluid Technology Group

Watson-Marlow Fluid Technology Group (WMFTG) is the world leader in niche peristaltic and sinusoidal pumps and associated fluid path technologies. Founded on nearly 60 years of supplying engineering and process expertise and with over one million pumps installed worldwide, our pumps are tried, tested and proven to deliver.

WMFTG is a wholly owned subsidiary of Spirax-Sarco Engineering plc (LSE: SPX), a global organisation employing approximately 4,800 people worldwide. Watson-Marlow Fluid Technology Group comprises nine established brands, each with their own area of expertise, but together offering our customers an unrivalled breadth of solutions for their pumping applications:

  • Watson-Marlow Pumps: peristaltic tube pumps for biopharm and process industries
  • Watson-Marlow Tubing: precision tubing for pumping and other purposes, in a range of materials
  • Bredel: high flow, high-pressure hose pumps
  • Alitea: unique peristaltic solutions for OEM customers
  • Flexicon: aseptic filling and capping systems
  • MasoSine: gentle sinusoidal pumps for food, chemical and cosmetics applications
  • BioPure: advanced single-use tubing connector systems
  • Asepco: aseptic valves for the biopharmaceutical industry
  • FlowSmart: high purity sanitary gaskets, silicone transfer tubing and reinforced silicone hoses for the biopharmaceutical industry

Watson-Marlow Fluid Technology Group is an international operation based in Falmouth, Cornwall, UK. Watson-Marlow Fluid |Technology Group has offices in Argentina, Australia, Austria, Belgium, Brazil, Chile, China, Canada, Denmark, France, Germany, India, Italy, Japan, South Korea, Malaysia, Mexico, the Netherlands, New Zealand, Poland, Russia, Sharjah UAE, Singapore, South Africa, Sweden, Switzerland, Taiwan, USA and Vietnam.

View full profile