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  1. gervanderpers

    Butterfly Valve for Seawater Material

    Body in ductile iron with aspecial 4till5 layer coating Exotic materials are verry nice but far to expensive fore these applications! a verry good and widly accepted disc construction is ductile iron with hardrubber coating (+/-6mm) when the valve is full rubberlined the shaft is not in contact...
  2. gervanderpers

    Butterfly Valve Material

    In general youll find for full rating PN25 valves Ductile iron or steel.grey cast iron in general for lower pressures
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