Valvesonly is a leading Twin Seal Plug Valve Manufacturer in USA. A Twin Seal Plug Valve is a type of industrial valve designed to control the flow of fluids in pipelines. Description: • Available materials: F22, CF8, CF3, CF3M, Ductile iron, WCB, WCC, WC9, WC6, Alloy 20, SS304, SS316, CF8M, SS316L, SS904L • Class: 150 to 2500, PN10 to PN450 • Size: 1/2” – 24” • End: Flanged, Socket weld, Butt weld, Screwed....