The valve petal USES the spring to load, its quick closedown can effective reduce the hammer pressure, the sealing property is good, the closure does not have the noise.
阀瓣采用弹簧加载，其快速关闭能有效的减小水锤压力，密封性能好，关闭无噪声。
The valve achieves the function of self-closedown when the electricity is stopped by using big capacitance components and reverse pulse discharge.
最后，对电磁阀进行电路设计，采用大电容元件及反向脉冲放电，实现了断电自关闭功能。
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