Pinch valves control media in the production of metal detectors

A company that specialises in the production of metal detectors for use in the food & pharmaceutical sectors uses pinch valves from the VM series (predecessor to the VMC series / VMP series). The installed pinch valves are used to control three of the media that are used to produce the detectors and clean the plant.

Metal detectors are a commonly installed component in the production and processing of food and pharmaceutical products. These detectors already check whether the media contain any metal impurities during the processing of the materials and immediately trigger an alarm if any metal is detected. The operator can then quickly respond and remove the impurity or investigate the reasons for the existence of the foreign body in more detail.

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The installed pinch valves control three of the media used in the plant: a two-component epoxy resin, sand mixed with additives that is required for producing the moulds and a solvent (methylene chloride) used to clean the pipelines after every casting process.

VM pinch valves fitted with sleeves made out of Viton were fitted by suppliers in the factory. After it was necessary to already replace them after 6 months, AKO recommended the use of sleeves made out of natural rubber because these had longer service lives with the media being transported. The natural rubber sleeves have now been in operation for several months and the plant operator is very pleased with the service life and the solution.