Special Material Valve:Titanium,Nickel Alloy,Zirconium,Nickel-Al Bronze,Super(Dulex), Nickel-Al Bronze,347, 321, 310, etc. ... : Titanium Materials: GR 2, GR5, GR7 Nickel alloy (Hastelloy®, Incoloy®, Inconel®, Monel®, Alloy 20,)Zirconium (702/705)(Super) Duplex347, 321 ... , 310, etc.Nickel-Al Bronze Ball Valve Specification ...