双瓣止回阀                        Double disc check valve概述  Overview     双瓣止回阀主要由阀体、阀瓣、阀杆及弹簧等重要零件组成，并采用薄型轻巧设计。由于阀瓣的关闭行程缩短及弹簧作用可加速关闭效果，减少水锤及水击声。该阀主要用于给水系统、高楼建筑及工业区。由于其面间距离较一般止回阀短，对有安装空间限制的场所更为便利。    Double disc check valve consists of body,disc,valve rod and spring and other parts.The valve is designed with slim light weight.The disc's shutoff stroke is very short and under the effect of the spring,the valve can close quickly and prevent the big noise from water-hammering.It is widely used in water supply and drainage system,high-rise building and industrial park.Because of its surface distance is short than other check valves. So it is more convenient for the confined space installation. 性能参数   Performance parameter公称压力：1.6MPa工作介质：清水工作温度：0-80℃Nominal pressure:1.6MPaWorking medium:Clean waterWorking temperature:0-80℃产品材质   Material阀体：铸铁阀瓣：球墨铸铁+NBR阀杆：不锈钢弹簧：不锈钢Valve body:cast ironValve disc:ductile cast iron+NBRValve rod:stainless steelSpring:stainless steel外形尺寸   Outline dimension型号（Model):LDH76X-16                单位（Unit): mmDNLD1D2D5043694610565468158124806497741421006411794162125701411121921507616813821820089217188273250114273222328300114324270378