主要性能 Main performance

(逆止阀)进口导热油，蒸汽止回阀为自动密封阀门，依靠介质本身流动而自动开、闭阀瓣，有效防止介质倒流阀瓣设弹簧装置,阀门既可水平安装，也可垂直安装 RETZ heat transfer oil and steam check valve are self sealing valves, which automatically open and close the valve disc depending on the flow of the medium itself, effectively preventing the medium from flowing back. The valve disc is provided with a spring device, and the valve can be installed horizontally or vertically

设计标准∶DIN3356

结构长度：DIN3202

连接法兰：DIN2543-2546

试验和检验：DIN3202

规格尺寸：F1/2-12"(法兰连接) Specification and size: F1 / 2-12 "(flange connection)

公称压力：16-40Bar Nominal pressure: 16-40bar

介质温度：-29-350℃  Medium temperature: - 29-350 ℃

(逆止阀)进口导热油，蒸汽止回阀 特点∶ Performance characteristics

密封面耐磨、耐腐、抗摩擦、使用寿命长 The sealing surface is wear-resistant, corrosion-resistant, friction resistant and has long service life

铸件采用覆膜砂铸造技术表面平整，光洁度可达１２．５～２５微米同时，铸件机械性能良好，０８％以上无气、砂眼和裂纹等缺陷，有效壁厚达标 RETZ The casting adopts coated sand casting technology, with a smooth surface and a finish of 12.5-25 microns. At the same time, the casting has good mechanical properties, and more than 08% of the casting is free of defects such as air, sand holes and cracks, and the effective wall thickness is up to the standard

主要零件材料 Main parts and materials

应用行业 Application industry

不同的材质和阀门类型适用于各种不同的工况环境，用户应当根据介质的性能、温度、压力、流速、流量等特性结合工艺、操作、安全等诸多因素，选用相应类型、结构形式、型号规格的阀门

Different materials and valve types are applicable to different working conditions. Users should select valves of corresponding types, structural forms, models and specifications according to the characteristics of medium such as performance, temperature, pressure, flow rate and flow, combined with many factors such as process, operation and safety