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

      氣動調節(jié)閥調節(jié)壓差的選擇
      氣動調節(jié)閥根據(jù)工藝參數(shù)(溫度、壓力、壓降、流速),流體特性(黏度、腐蝕性、毒性、含懸浮物或纖維等),控制系統(tǒng)的要求(可調比、泄漏量、噪聲)以及調節(jié)閥管道連接形式來綜合選擇調節(jié)閥形式。
      首先應優(yōu)選直行程調節(jié)閥:潔凈、不含固體顆粒、低黏度流體選用單座或普通籠式調節(jié)閥;當介質存在閃蒸、汽蝕或噪聲超過85dB(A)時,應選用多級抗汽蝕或多級降噪閥籠。高黏度、含有固體顆粒和污穢流體且控制要求可調比R較大(100∶1)時宜選用V型球閥;介質流通能力很大、R較小(30∶1)的場合,可選用三偏心蝶閥。

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