Special Material Valve:Titanium,Nickel Alloy,Zirconium,Nickel-Al Bronze,Super(Dulex), Nickel-Al Bronze,347, 321, 310, etc. Design and ... ®, Monel®, Alloy 20,)Zirconium (702/705)(Super) Duplex347, 321, 310, etc.Nickel-Al Bronze Swing Check Valve Specification:Size: ½”-10”Pressure rate ...