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Pneumatic control valve to regulate the selection of pressure difference
The author: Time:2019/8/26

      气动调节阀调节压差的选择
      气动调节阀根据工艺参数(温度、压力、压降、流速),流体特性(黏度、腐蚀性、毒性、含悬浮物或纤维等),控制系统的要求(可调比、泄漏量、噪声)以及调节阀管道连接形式来综合选择调节阀形式。
      首先应优选直行程调节阀:洁净、不含固体颗粒、低黏度流体选用单座或普通笼式调节阀;当介质存在闪蒸、汽蚀或噪声超过85dB(A)时,应选用多级抗汽蚀或多级降噪阀笼。高黏度、含有固体颗粒和污秽流体且控制要求可调比R较大(100∶1)时宜选用V型球阀;介质流通能力很大、R较小(30∶1)的场合,可选用三偏心蝶阀。

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