德国费斯托FESTO调压阀中国代理商*

德国费斯托FESTO调压阀中国代理商*

     FESTO比例调节阀功效和封闭密封特性，在大中口径、中低压力的应用范畴，电动球阀是主导的阀门情势。电动球阀处于完整开启地位时，蝶板厚度是介质流经阀体时*的阻力，因此通过该阀门所发生的压力降很小，故具有较好的流量把持特征。电动球阀有弹密封和金属的密封两种密封型式。弹性密封阀门，密封圈可以镶嵌在阀体上或附在蝶板周边。 采取金属密封的阀门一般比弹性密封的阀门寿命长，但很难做到完整密封。金属密封能适应较高的 工作温度，弹性密封则具有受温度限制的缺 点。 假如请求电动球阀作为流量把持使用，重要的是准确选择阀门的尺寸和类型。电动球阀的构造原理尤其合适制造大口径阀门。电动球阀不仅在石油、煤气、化工、水处置等一般产业上得到普遍运用，而且还利用于热电站的冷却水体系。
    FESTO比例调节阀自力式压力控制阀）无需外加能源，利用被调介质自身能量为动力源，引入执行机构控制阀芯位置，改弯两端的压差和流量，使阀前（或阀后）压力稳定。具有动作灵敏，密封性好，压力设定点波动力小等优点，自力式压力控制阀广泛应用于气体、液体及蒸汽介质减压稳压或泄压稳压的自动控制。

德国费斯托FESTO调压阀中国代理商*

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