Inlet valve and seat, due to open and close more frequently, the liquid flow rate is high, sealing will soon expire.
进液阀芯和阀座，由于开启关闭比较频繁，液体流速高，密封很快就会失效。
3 close and reliable, the current valve sealing surface material widely used plastic, good sealing, in the vacuum system has also been widely used.
紧密可靠，目前球阀的密封面材料广泛使用塑料，密封性好，在真空系统中也已广泛使用。
3 close and reliable, the current valve sealing surface material widely used plastic, good sealing, in the vacuum system has also been widely used.
紧密可靠，目前球阀的密封面材料广泛使用塑料，密封性好，在真空系统中也已广泛使用。
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