ISO 10434:2004规定了炼油厂和相关应用中重型螺栓阀盖钢闸阀系列的要求，其中腐蚀、侵蚀和其他使用条件表明需要全端口开口、厚壁截面和大阀杆直径。它规定了下列闸阀特性的要求:螺栓连接阀盖；外螺纹和轭架；上升的茎；非上升手轮；单门或双门；楔形或平行阀座；金属阀座表面；法兰或对焊端。它包括公称尺寸为DN 25、32、40、50、65、80、100、150、200、250、300、350、400、450、500和600的阀门，对应于公称管道尺寸NPS 1、1 1/4、1/2、2、2 1/2、3、4、6、8、10、12、14、16、18、20和24。 它适用于压力等级名称150、300、600、900、1500和2500。

ISO 10434:2004 specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion and other service conditions would indicate a need for full port openings, heavy wall sections and large stem diameters. It sets forth the requirements for the following gate valve features: bolted bonnet; outside screw and yoke; rising stems; nonrising handwheels; single or double gate; wedge or parallel seating; metallic seating surfaces; flanged or butt-welding ends. It covers valves of the nominal sizes DN 25, 32, 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500 and 600, corresponding to nominal pipe sizes NPS 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20 and 24. It is applicable to pressure Class designations 150, 300, 600, 900, 1500 and 2500.