Feature and Function: This product extensively using as cut-off device at the turbine system of power station and the pipeline of chemical industry. 1. Design and manufacture conform to API602,BS5352,ANSIB16.34 2. Connection ends conform to: 1) Socket welded ends conform to ANSIB16.11,JB/T1751 2) Screw ends conform to ANSIB1.201,JB/T7306 3) Bult-welded ends conform to ANSIB16.25,JB/T12224 4) Flanged ends conform to ANSIB16.5,JB79 3.Test and inspection conform to: AP1598,GB/T13927,JB/T9092 4.Structure features: Bolted bonnet,outside screw and yoke.Welded bonnet,outside screw and yoke 5.Materials conform to ANSI/ASTM. 6.Main materials:A105,LF2,F11,F22,304(L),316(L),F347,F321,F51,Monel.20 Alloy Valve pressure:from Class 150 lb to Class 1500 lb