A Duplex Valve Manufacturer in USA is a valve that is made of the duplex steel. Description: ●Body Material: Duplex Steel (F51, F53, 4A, 5A), ASTM A995, A890 ●Class: 150 to 2500. ●Pressure: PN25 to PN450. ●Size: ½” to 72”. ●Operations: Lever operated, Handwheel operated, Pneumatic actuated, Electric actuated ●Ends: Butt Weld, Socket weld, Threaded, Flanged, Wafer and Lug.