进口长轴型波纹管截止阀性能描述 Performance description

长轴型波纹管截止阀采用锥面密封，密封面不残留杂质，在趋于关闭时，密封面具有自清洁作用。锥形密封面，可以使阀杆轴向力转化为密封力时具有放大作用，在同样的压力下可获得更大的密封比压，关闭更轻松，密封性能更好 RETZ The long shaft bellow globe valve is sealed with a conical surface, and the sealing surface is free of impurities. When it tends to close, the sealing surface has a self-cleaning effect. Conical sealing surface can magnify the axial force of the valve stem when it is converted into sealing force. Under the same pressure, greater sealing pressure can be obtained, which makes it easier to close and has better sealing performance

进口长轴型波纹管截止阀技术要求Applicable Standards

设计标准 Design Rating∶EN12516、DIN3356、ASMEB16.34；

结构长度Face to Face∶EN558、DIN3202、ASMEB16.10；

法兰标准Flanged Ends∶EN1092-1、GB/T9113、DIN2543-2545、ASMEB16.5 ；

检查和试验 Inspection & Testing∶EN12266、DIN 3230、AIP598

规格尺寸 Size : 1/2～12"

公称压力 Nominal pressure：PN16～PN40、CL150～300LB

适应温度 Applicable temperature ：-20～350℃

波纹管的结构

阀芯结构

锥面密封∶密封面不残留杂质∶在趋于关闭时，密封面具有自清洁作用，实现线性密封 Conical sealing: no impurities remain on the sealing surface: when the sealing surface tends to close, the sealing surface has self-cleaning effect to achieve linear sealing

平衡双阀瓣密封∶小阀瓣缓解压力后带动大阀瓣轻松打开 Balanced double disc sealing: small disc releases pressure and drives large disc to open easily

平面软密封∶开启和关闭时软密封表面可防止火花产生，适用于气体介质或耐腐蚀要求的工况 Flat soft seal: the soft seal surface can prevent sparks when opening and closing, and is suitable for working conditions with gas medium or corrosion resistance requirements

阀体和内部结构

主要零部件材料 Main parts and materials