Under the flow for spool valve closure and relatively easy changes in fluid pressure and flow and less.
对于阀芯下流动，阀门相对地容易关闭而且流体压力和流量变化和少。
Therefore, regulating valve will produce a strong shock and a harsh noise, resulting in fracture spool quickly.
所以调节阀会产生强烈的震荡并发出刺耳的噪声，因而导致阀芯很快断裂。
These valves contain two coils and one valve body and spool assembly.
这些阀门包含两个线圈、一个阀体和阀芯总成。
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