Special Material Valve:Titanium,Nickel Alloy,Zirconium,Nickel-Al Bronze ... etc. sign and Manufacturing special material valves:- Special material valve (w/strainer, w/glass) on the basis of ... Duplex347, 321, 310, etc.Nickel-Al Bronze Check Valve Specification:Swing/piston/ checkSize: ½”-10”Pressure rate:4500 ... THR,HUB etc. Inspections:100% hydraulic test100% UTLPE/X-ray/PT/MT is available upon request