Fluorinated butterfly valve
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Can only butterfly valves with a vertical central plate be lined with fluoropolymer? What about single eccentric, double eccentric, and triple eccentric?
Yes, only the midline type. Eccentric types are generally hard-sealed.
No, for a midline design, it is optimal to use fluorinated material that covers both the plate and the shaft together; this prevents corrosive substances from reaching between the shaft and the plate