The use of Bianca PTFE seated butterfly valves with PFA coated discs reduces production losses in chemical processes compared to conventional valves. The PFA coated discs are ideal solutions to handle strong fluctuations of temperature and acid concentration in these processes. To satisfy requirements for larger valve sizes than 750 mm InterApp has pushed the development of these butterfly valves up to DN 900. The first production lot is already successfully in use for quite some time. Bianca butterfly valves with PFA coated discs are now available from DN 32 up to DN 900.
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