(DIN)进口德标止回阀用途慨述 Overview of use

DIN德标止回阀（德式逆止阀）是具有常时保持流体固定流向,防止倒流功能的阀。阀芯在流体压力的作用下被推开，呈流通状，但倒流时，阀芯在背压作用下与阀体的阀座密切接触，防止倒流  RETZ DIN German standard check valve (German check valve) is a valve with the function of maintaining a fixed flow direction of fluid and preventing backflow. The valve core is pushed away under the action of fluid pressure, in a flowing state. However, during backflow, the valve core is in close contact with the valve seat under the action of back pressure to prevent backflow

(DIN)进口德标止回阀技术规范 technical specifications

设计标准 Design Rating∶DIN3356，EN 13709

结构长度Face to Face∶DIN3202， EN 558-1, DIN 3202, ISO 5752

法兰标准Flanged Ends∶DIN2543-2546，EN 12267，EN 1092-1

对焊标准Butt welded ：EN12627 AND DIN 3239

检查和试验 Inspection & Testing∶EN 12266, ISO 5208，DIN3230

通径:2”~12” (DN50~300)

压力等级：ANSI/ASME 150Lb~300Lb(PN1.6~4.0 Mpa)

适用温度：-40~350℃

升降式止回阀结构特点 Structural features of lift check valve

属于将截止阀上的阀杆、手柄、其它开闭操作部分卸下，加盖后形成的构造。流体阻抗较大，主要是较小口径的产品 It belongs to the structure formed after removing the valve stem, handle and other opening and closing operation parts on the stop valve and capping them. Large fluid impedance, mainly products with small diameter

动作灵活可靠 . 密封性能优良  Flexible and reliable operation, excellent sealing performance

设计抗震弹簧:不锈钢  Design anti-seismic spring: stainless steel

精确导向阀瓣，动作灵敏、密封性能好 Precise guide disc, sensitive action and good sealing performance

水平或垂直管道均可使用，安装方便 Horizontal or vertical pipes can be used for convenient installation

主要零部件材质Main Parts Material

旋启式止回阀结构特点 Structural features of swing check valve

将圆盘状的阀芯一端制成“轴销形式”，阀芯可自由旋启的这样一种阀，其压力损失小，流体易于流动。不仅可用于水平配管，也可用于纵向配管（从下向上流动）One end of the disc shaped valve core is made into a "pin type", and the valve core can swing freely. The pressure loss is small, and the fluid is easy to flow. It can be used not only for horizontal piping, but also for vertical piping (flowing from bottom to top)

水平或垂直管道均可使用，安装方便 Horizontal or vertical pipes can be used for convenient installation

动作灵敏、密封性能好 Sensitive action, good sealing performance

整体结构、简单紧凑、造型美观 Overall structure, simple and compact, beautiful appearance

使用寿命长、可靠性高 Long service life and high reliability

主要零部件材质Main Parts Material