进口对夹式止回阀，弹簧式逆止阀慨述 Express with regret

对夹式止回阀（升降式逆止阀）适用于中小口径的场合,阀瓣随着介质压力作用沿着中心轴向前推,介质流通;当介质压力间断,在弹簧的作用下,阀瓣回座,阻止介质倒流  RETZ Wafer check valve (lift check valve) is applicable to small and medium caliber situations. The valve clack is pushed forward along the central axis with the medium pressure, and the medium flows; When the medium pressure is interrupted, the valve clack will return to its seat under the action of the spring to prevent the medium from backflow

技术参数 Technical paramete

标准与规范 Standards and specifications

1、设计与制造∶API594、API6D、JB/T8937；

2、结构长度∶API594、API6D、DIN3202、JB/T8937；

3、压力-温度等级∶ASMEB16.34、DIN2401、GB/T12224；

4、试验与检验∶API598、GB/T26480；

5、配管法兰∶ JBT74-90、GBT9113、HG20592-20635、SH3406、ASME B16.5、DIN2543-2548、GB/T13402、AP1605、ASME B16.47

进口对夹式止回阀，弹簧式逆止阀性能比较 Performance Comparison of Wafer and Flange Lift Check Valves

进口对夹式止回阀，弹簧式逆止阀结构特点 Structural characteristics

结构长度小、动作灵敏、密封性能好 Small structure length, sensitive action and good sealing performance

在水平和垂直位置安装都行 It can be installed in both horizontal and vertical positions

优异的水压性能、阀瓣关闭快速．水锤压力小 Excellent water pressure performance, fast valve disc closing, low water hammer pressure

流道通畅、低水头损失、流体阻力小 Smooth flow passage, low head loss and small fluid resistance

耐高压和高温性能、整体结构,可靠性高 High pressure and high temperature resistance, overall structure, high reliability

防“水锤”Prevention of "water hammer"

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

阀瓣行程短、关闭冲击力小 Short disc stroke and small closing impact

流体力学性能/对夹式止回阀的体积流量与压力降关系

Hydrodynamic performance/volume flow and pressure drop relationship of wafer double flap swing check valve

流体力学性能/对夹式止回阀的流体阻力系数

The hydromechanics performance/to clamps the double petal to turn on lathe opens the type check valve the fluid resistance coefficient

流体力学性能/对夹式止回阀流体阻力系数、流量系数及开启压力

The hydromechanics performance/to clamps thedouble petal to turn on lathe opens the type check valve fluid resistance coefficient, the discharge coefficient and the opening pressure